Table of Contents

Undocumented Guidelines

There are a lot of staff opinions and decisions that come from discussion in the Database Forum and in staff-only forums which no longer exist.

This is the place to collect all these "undocumented guidelines".

Note that this is work in progress, and as these are not Guidelines, you cannot just take whatever is written here as the one and only truth. Use the Database forum to discuss the issues and seek consensus.

Details regarding General Rules

Authority of staff

Comments by the following Discogs staff carry extra weight:

  • Kevin, a.k.a. teo – founder & CEO
  • Nik, a.k.a. nik – Chief Discography/Data Officer, formerly Database Manager
  • Brent, a.k.a. Diognes_The_Fox – Discography Specialist

These members of Discogs' management speak with authority on matters of general policy and intent, database and website capabilities, and expectations of users. Their positions on some issues have changed over time, and they can be influenced by the opinions of users.

Guidelines are somewhat flexible

Reasons for guideline 1.2.1 (the capitalization rule)

Nik says "The rule was chosen as the simplest and easiest way to enter data, based on the fact that only a small percentage of users either knew or were interested in the exact title capitalization rules for different languages, and also because 'correct' title capitalization is often ignored, wrong, or contradictory on the releases themselves, and that capitalization for the vast majority of cases does not impart any more information to the title, especially when taken in context."

Some variations in types of sleeves can be unique releases

It is normal for initial copies of a release to be in a picture sleeve, and subsequent copies to be in a plain or company sleeve. These can be in the database as separate releases. However, variations in company sleeves are usually not eligible to be separate releases.

Different pressing rings / indents on the labels of vinyl records are not unique releases

If there are no identifiers that can be derived to different companies then different pressing rings are not enough to warrant a Unique Release.

Details regarding Label / Catalog

Cat# "none" is rarely allowed on multi-label releases

The use of "none" as a catalog number is really only for releases which have no catalog numbers at all. On multi-label releases, especially those involving a major label, it is often the case that the catalog numbers either all "belong" to one label, or it's unclear which number is associated with which label. RSG § 4.7.2 & § 4.8.3 partially cover this, but not in enough detail to account for the traditional way of handling these situations: we just associate every label with every catalog number. So for example, on a release with 2 labels and 2 catalog numbers, you would make 4 label entries, one for each pair: Label1+Cat#1, Label1+Cat#2, Label2+Cat#1, Label2+Cat#2.

  • nik says so – "the catalog number [...] is not 'none', because a catalog number does exist on the release [...] for the moment, the cat# should be repeated"
  • Some threads where this is revisited and everyone generally agrees: 1, 2, 3, 4, 5 (less agreement here)

However, repetition of every catalog number may not be necessary:

  • nik advised one user to only repeat the first cat# in alphanumeric order

Details regarding Title

Quotation marks around classical work nicknames are acceptable

To further clarify RSG § 3.1.5, the nicknames of classical works are sometimes presented in quotation marks alongside a more formal title, and it is OK to transcribe these as on the release. This applies to both release title and track title fields.

Details regarding Barcodes and Other Identifiers

Enter any amount of Matrix/Runout whitespace as exactly one regular space character

One month after the Dec. 2009 introduction of BAOI fields, RSG § 5.2.c was amended to establish a formatting standard for Matrix/Runout fields. It says to use "a space" between separate matrix codes, no matter how much space actually separates them. This means a single, ordinary space character. Previous conventions of using multiple spaces or visible separators like a vertical bar/pipe character are no longer supported.

Thus it is impossible to use a Matrix/Runout field to represent how groups of matrix codes are separated on the release. The original suggestion was that matrix code-group separation could still be explained in the release notes somehow, but this never caught on and was not mentioned in the guidelines.

Stamped vs Etched belongs in release notes, maybe descriptions

Although it is unnecessary, users have been entering the matrix data for vinyl records in a way that tries to clarify which codes are stamped and which are hand-etched. Per RSG § 5.2.c, separate fields should not be used for this. Trying to cram "Stamped"/"Etched" into matrix data or matrix description fields gets cluttered quickly, so the release notes are preferred, although the matrix description fields may be acceptable too.

When adding a matrix variant, consider adding the full set of fields

When adding a new matrix variant, and using more than one field—e.g., you are entering a CD's SID codes in addition to the main Matrix/Runout field—it is tempting to consolidate fields in order to avoid repeating data.

There is no strict rule about this, just advice and opinions in an epic, ongoing discussion about the best order for matrix variants.

Links to important posts from Brent:

In other words, it is management's opinion that it is better, though not required, to just enter a "full set" of matrix data. Just try not to change what other people have entered, as long as it is factually correct.

For example, say you want to add variant 4 to this, which already has had some consoliation of fields:

Matrix/Runout: ABC123-2
Mastering SID Code (Variant 1, 2): IFPI L001
Mastering SID Code (Variant 3): IFPI L002
Mould SID Code (Variant 1): ifpi 9999
Mould SID Code (Variant 2): ifpi 9977
Mould SID Code (Variant 3): ifpi 9902

Management prefers that you don't just follow the existing pattern like this (although it remains an option):

Matrix/Runout: ABC123-2
Mastering SID Code (Variant 1, 2, 4): IFPI L001
Mastering SID Code (Variant 3): IFPI L002
Mould SID Code (Variant 1): ifpi 9999
Mould SID Code (Variant 2): ifpi 9977
Mould SID Code (Variant 3): ifpi 9902
Mould SID Code (Variant 4): ifpi 9945

Instead, you could do this, even though it uses more lines and repeats the main matrix:

Matrix/Runout (Variants 1 to 3): ABC123-2
Mastering SID Code (Variant 1, 2): IFPI L001
Mastering SID Code (Variant 3): IFPI L002
Mould SID Code (Variant 1): ifpi 9999
Mould SID Code (Variant 2): ifpi 9977
Mould SID Code (Variant 3): ifpi 9902
Matrix/Runout (Variant 4): ABC123-2
Mastering SID Code (Variant 4): IFPI L001
Mould SID Code (Variant 4): ifpi 9945

If everyone had done this from the beginning, it would have looked like this:

Matrix/Runout (Variant 1): ABC123-2
Mastering SID Code (Variant 1): IFPI L001
Mould SID Code (Variant 1): ifpi 9999
Matrix/Runout (Variant 2): ABC123-2
Mastering SID Code (Variant 2): IFPI L001
Mould SID Code (Variant 2): ifpi 9977
Matrix/Runout (Variant 3): ABC123-2
Mastering SID Code (Variant 3): IFPI L002
Mould SID Code (Variant 3): ifpi 9902
Matrix/Runout (Variant 4): ABC123-2
Mastering SID Code (Variant 4): IFPI L001
Mould SID Code (Variant 4): ifpi 9945

Ultimately, with some better separation and tabularization designed into the website, this would be the easiest to read and for people to add their own variants to. However, to reiterate: this method is not a requirement; it is just advice/preferences expressed by management.

Do not change order of matrix variants

RSG §1.10.3 says not to make updates "just to change the order of data". People often seem to think this might not apply to matrix/runout variants, but it does. Matrix variants should not be renumbered. People keep track of variant numbers in their collection notes and for-sale listings, so changing Variant 2 to be Variant 7, for example, would invalidate those notes.

Likewise, when a matrix variant is removed, do not reorder the remaining variants to try to fill in the gap in numbering. However, you can add a new variant in the empty slot:

However, some static and awkwardly placed BAOI fields can be moved so they are not in the middle of matrix info. For example, a Barcode can be moved so it is not stuck between Matrix/Runout and SID code entries.

When adding the second matrix variant to a release, it is preferred to then name the original set "Variant 1" and the new set "Variant 2".

Comments from mjb:

If the second matrix was already added as Variant 1, leaving the first variant unnumbered, and not very much time has gone by, then it seems like it would be OK to renumber them Variant 1 and Variant 2. But as time goes on (how long?), it is more likely that the second set must retain the name Variant 1. Can/should the first one be edited to be "Variant 0", then?

Is it OK to change nontraditional terminology like "Second Variation" or "Version Two" to the more traditional "Variant 2", or must they remain as originally entered?

Pressing Plant ID should not be removed from Matrix/Runout

When the Pressing Plant ID type of BaOI field was introduced, it was originally intended only for printed matter, such as the single-letter codes often seen on the labels of A&M Records 45s. However, RSG § 5.2.e was changed to allow the field to be used for codes found in matrix/runout areas, as well.

When these codes appear in matrix/runout etchings, they should still also be included in the transcriptions entered in Matrix/Runout fields, as encouraged by RSG § 5.2.c.; do not remove them from the matrix data when adding them to a Pressing Plant ID field.

Whether every pressing plant mentioned in the matrix really should be entered as a Pressing Plant ID is a topic of debate.

Details regarding Tracklisting

Semi-generic side names can be headings

Some records, instead of having sides marked A/B or One/Two or 1/2, have semi-generic side names like This Side/That Side, Logo Side/Info Side, Here/There, or similar. On Discogs, these are considered non-generic side names which may be entered as headings. The guidelines for headings say a heading should be used for release text "descriptive of" groups of tracks, but management has repeatedly ruled that such text can merely be referring to them.

When measuring your own durations, there will always be a margin of error

Although it is correct to enter durations printed on the release, there are no guidelines for making your own determination of the actual durations, other than that you must obtain the durations from your own copy of the release. Some differences between your measurements and the printed durations are to be expected, since durations can be measured in different ways. For example, it's common for printed durations to only be for the musical content, not counting silent passages between songs, whereas CD players do include the silent passages when reporting track durations (some include the pre-gap as the total track time, some do not). Other considerations include how fractional seconds are rounded, analog playback speed variations when making your own measurements, uncertainty about where a fade-out ends when there's a lot of background noise, and printed durations intentionally omitting intros and fade-outs for the benefit of radio DJs. If unsure about whether a printed duration is "correct", ask in the Database forum.

Track positions for double-A-side releases use as-on-release side designations when different

There is no requirement that double-A-sided releases be entered with "A" and "AA" track positions. If sides are designated on the release, those designations must be used. When sides are not designated, "A" and "B" positions remain standard, even if both sides have the same content.

Additional comment from mjb:

Some (many?) users were in the habit of using "A" and "AA" when the sides were not designated, but the guidelines don't actually support this.

Track positions for double-A-side releases with undesignated sides depend on content

For double-A-side releases (no side seeming to be promoted more than the other), if the sides aren't designated and the content differs, some effort must be made to ascertain which side to call side "A". External sources should be consulted, including charts, official artist/label sites, promotional materials, related releases, and common sense.

Additional comment from mjb:

Some users think the sequence of matrix numbers matters, with the lower number being the "A" side, but this is completely arbitrary; those numbers are normally just chronologically assigned IDs for master recordings or lacquer cuts. They only matter when one has an "A" suffix and the other has a "B" suffix.

Stars around track title on a 7" or 12" indicate the "plug" side

Radio promo 7" releases sometimes designate one side as the "plug side", indicating which song is intended to be promoted. Sometimes instead of explicitly using the word "plug", there will just be stars around one of the track titles. The stars are not part of the titles; they're just another way of marking the plug side. These markings can be used, along with the other usual factors, to determine which side to consider the "A" side.

The Promo tag can usually be added to such releases even without explicit "for promotional use only"-type text, although this may be in conflict with RSG § 6.12.2 if the markings are added by means of a stamp rather than being professionally printed on the labels.

Single-sided release track positions must include side "A" indicator

Track positions for single-sided releases should still use sides—e.g., the numbers will be A1, A2, A3, etc., even though there's not going to be B1, B2, B3, etc.

Details regarding Format

Promo tag can be added to 7" or 12" releases with a designated "plug" side

See the info above re: Stars around track title.

Releases only marked "Not For Sale" may not be eligible for the Promo tag

The text Not For Sale, when printed on a release, usually means the item is for promotional/DJ use only, thus it is usually tagged Promo by well-meaning Discogs users. However, this kind of text was also common on releases made for the jukebox operator market, which is a specialized retail market, so the Promo tag is not always appropriate; there is now a Jukebox tag for such items.

Comment from mjb:

Nik's statement was made way before the Jukebox tag existed, and certainly some formats are quite uncommon in jukeboxes (e.g. full-length 12" vinyl albums), so it should be safe to tag those as Promo if they do not have indications of jukebox on them. Were there more recent discussions about this?

How to handle retail editions made into promos by stamps, stickers, punches/cuts, etc.

RSG § 6.12.2 says that a retail release with a promo notice added by means of a stamp, sticker, or "similar" alteration to the cover is not to be considered a separate promo release. It is forbidden to submit such releases as promos, and there is no forum consensus for even adding a release note along the lines of "some copies are gold-stamp promos". Users with such items should simply add the retail release to their collections, wantlists, and for-sale listings, and then use the collection notes, wantlist notes, or for-sale listing description to mention the stamp, sticker, or whatever.

Promo tag and separate releases are allowed for CDs with promo text professionally printed on the disc

RSG § 6.12.2 says that a retail release with a promo notice added by means of a stamp, sticker, or similar alteration to the cover or media is not to be considered a separate promo release.

An exception has long been made for Japan-market CDs. Many Japanese retail CDs were made into promos by the addition of "Sample" and/or "Loaned" text (often in Japanese characters) on the hub of the disc, along with stickers or stamps on the printed matter. The hub text is not currently considered to be a post-manufacture alteration, so these CDs are OK to submit as separate releases.

Effective September 2020, an exception exists for any other CD where the promo text has been added via a silkscreen print overlay on the surface of the disc:

Releases with an empty space for numbering are to be considered Numbered even though they contain no number

Some releases come with for instance a white square field with a pre-printed number, for example "/500". Then they are hand numbered from 1 to 500. If more than 500 copies are pressed then some are going to be without number. Some might be marked "Promo". They are to be considered Numbered since they contain a space for numbering and should not be considered unique releases.

Manufacturers can be in the free text field

Pressing/manufacturing plant identifiers can be entered in the format free text field (FTF), as long as the text is concise, easy to understand on its own (so, not just a two-letter code), and helps distinguish the release from nearly identical items already in the database:

Details regarding Master Release

Submission notes are optional

When editing a master release (MR), this is the only place on Discogs where you have the option of leaving Submission Notes blank. For just adding one or two stray, unremarkable releases to the MR, that's fine, but if you are making major changes or doing something that other users might not understand, then please mention why you are doing it. Use the Database forum to ask about anything major.

Remix and reissue editions usually belong with original releases

Reissues and remix editions usually belong in the same MR as the original releases, regardless of release date and regardless of variations in release titles, track versions, and B-sides. Likewise, albums released with different titles and track order in different regions usually belong with all the other editions of an album.

The guidelines which apply are 16.2.2 ("Master Release is intended to contain as many releases as reasonable") and 16.2.1 ("[The release] Is a...remix...or other such variation" / "Single including Maxi Single - all versions should be bundled in the Master Release, including Maxi and Remix versions.")

Ask in the Database forum if unsure, because exceptions are sometimes made, per 16.2.1: "Releases shouldn't be forced into a Master Release - if the addition of a release to a MR is contentious, confusing, or difficult, then it should probably not be part of the Master Release in question."

Additional comment from mjb:

If Discogs were to add the ability to have sub-MRs (groupings of releases within an MR), it would go a long way toward reducing the number of arguments about this topic.

Certain types of releases usually get their own Master Release


  • Album samplers do not go with the albums.
  • Live albums do not go with studio albums.
  • Total re-recordings do not go with original recordings.
  • Double-A-side/back-to-back-hits types of reissue singles do not go with original singles.
  • 4-song 7" EPs (usually French) from the 1950s & 1960s do not go with the 2-song singles.

Again, ask in the Database forum if unsure.

Some supporting discussion:

Different recordings from the same tour may go in one Master Release

Some touring pop/rock artists have many live recordings showing up as separate releases in the Albums section of the artist page. Technological solutions for this clutter are not forthcoming anytime soon, so as a "temporary" measure to keep these pages somewhat tidy, it is permitted to create a separate Master Release for any recordings from one tour. The tracklists do not have to match, and the recordings can even be from different performances.

This should only be done for "larger display issues on specific pages instead of trying to make a single MR for every single time a band puts out a record from a tour that hits more than 1 stop." As always, ask in the forum.

Partial re-recordings may or may not get their own Master Release

Total re-recordings usually belong in a separate Master Release, but partial re-recordings may or may not need to be separate. Use the Database forum to discuss specific cases. It can be said that guideline 16.2.3 applies (if a recording belongs in multiple MRs, don't put it in any of them), but ultimately it comes down to whatever the users decide for a particular example.

Additional comment from mjb:

There is debate over how to distinguish a partial re-recording from a remix with additional production. Sometimes it's just marketing, especially in cases where the artist is billed as "Artist1 vs. Artist2" with producer credits but no explicit remix credit. Some users consider these to be just remixes which belong in the same MR as originals, but others keep them separate, especially if vocals were re-recorded.


Recycling old release numbers

The following arose from an old thread where the perceived "clutter" in a release's history was addressed. This would typically occur when one release is merged into another.

Example: Release A is submitted in good faith. It turns out to be a duplicate of existing Release B. Releases A and B are merged (where B is kept), and Release A returns into User A's drafts folder. User edits the draft Release A into something else, creating an entirely unrelated Release C, which is then submitted.

This in itself poses no problem with the database were it not for the fact that Release C's internal history now includes discussions and portions of its original submission history as well as the merge process and disabled images from when it was still Release A. In extreme instances it may even have a sales history (moreso problematic if a physical release is recycled into a digital release).

Clutter aside, users and voters may potentially find the release history confusing. It is therefore advised not to re-use old releases.