Sequences: Revision

Purpose

Defines the technical revision format for documents and parts.

Where used

Documents, parts

Data fields

General tab

Name
This is the complete name for the revision sequence.
Description
This describes the revision sequence and its use.
Starting revision
The value specified here is assigned to a new item's revision attribute. The Starting revision value does not change as a result of the assignment; instead, subsequent revisions of the item are incremented according to the sequence rules, such as prefix and invalid characters.
You specify both the revision sequence's format and the actual next-assigned value. The format is determined by the location and type of character (letter, number or symbol) that you enter. If you enter a numeric digit at a specific location, then all subsequent values use only a numeric digit at that location. Likewise, a letter at a particular location ensures that only letters are used when the identifier is incremented. Non-alphanumeric characters (e.g., "/" or "-") are ignored when the value is incremented.
Example: If you've specified A.01 as the Starting revision value, then the next item iteration is assigned as A.02. The revision immediately following A.99 is B.00.
If no alphanumeric characters are specified, then the item's initial iteration is assigned the starting revision value. Any subsequent revision assignments are alphabetic.
Example: If the Starting revision value is specified as , then the next item iteration would be assigned as A.
Skip characters
You can also specify which characters are not considered when a Starting revision value is incremented. Since these characters are only examined when the sequence increments, you can (for instance) use a skip character as the initial value for a revision and it will never be used in a subsequent revision.
Example: If the letters "IOSQZ" are invalid, then an item with revision "AH" is incremented to new revision "AJ".
If your company mixes letters and numbers in the same sequence (not a best practice), then the letters BIOQSZ are good candidates to be skipped since, in some typefaces, they are difficult to distinguish from numbers.
Active: users can select
Default member of collection
Permanent member of collection
For a description of these checkboxes, see the Collections reference > Managing collections help topic.

Where Used tab

This list enumerates all of the document and part types that are using the current revision sequence.

Setup suggestions

Alphabetic characters have traditionally been used for revisions. Although most items won't require more than 26 revisions, you may want to specify a double-letter revision sequence starting at "AA". This allows almost 700 revisions for those particularly long-lived items, and specifying the number of revision characters up front means your users will never have to worry whether the item is truly at Revision B, instead of an accidentally truncated Revision BC.

Numeric revisions are a more recent, and often superior, practice. They do not require skip characters, and are far more accessible on computer keyboards for all languages. A two-character numeric revision provides almost 100 revisions, which is far more than is likely for any item.

Although you can modify a sequence after it's been in use, you should exercise caution as it will affect all new items, as well as all existing items, that rely on that sequence.

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Help Guide Contents [PDF]