Sequences: Identifier

Collection Explorer General group Sequences: Identifier collection

Purpose§

Defines the format and next number for new documents, parts and changes.

Where used§

Documents, parts, changes

Data fields§

General§

Name§
This is the complete name for the identifier sequence.
Description§
This gives the identifier sequence and how it should be used.
Prefix characters§
These are an unchanging set of characters that are copied to the beginning of every Next assignment value.
Example: If you've specified "DWG-" as the sequence's prefix characters and the Next assignment value is "100123", then the value given to a new item would be "DWG-100123". The subsequent number would be "DWG-100124".
Next assignment§
The Next assignment value is given to a new item's number attribute, and the value is then incremented. You specify both the 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 specified location, then all subsequent values will only use 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 skipped when the value is incremented.
Example: If you've specified "123AZ-99" as the Next assignment value, then the value would be incremented to "123BA-00".
Use only numeric characters (0…9) in your sequences. Avoid using a sequence longer than 8 characters.
Suffix characters§
These are an unchanging set of characters that are added to the end of every Next assignment value.
Example: If you've specified "-000" as the sequence's suffix characters and the Next assignment value is "100123", then the value assigned to a new item would be "100123-000". The subsequent assignment would be "100124-000".
Skip characters§
You can also specify which characters are not considered when a Next assignment 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 an identifier and it will never be used in a subsequent assignment.
Enter the exact characters to be skipped, without a space, quote or other delimiter: IOSQXZ.
Example: If the letters IOSZ are invalid, then the Next assignment value of "CH9Y9" is incremented to "CJ0A0".
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 or handwritten notes, they are difficult to distinguish from numbers.
Active: users can select
Default member of collection
Permanent member of collection§
See the Managing collections: Common attributes help topic.

Where Used list§

This list enumerates all of the item types that are using the identifier sequence.

Setup§

Designing a part or document number scheme can be simple or highly complex. For our recommendations, search the web for PDXpert item number best practice.

Item identification is not just giving a number to a part or document, but typically includes defining the owning organization and possibly the item class and type.

To avoid duplicate identifiers, your System Rules tool specifies which data elements are tested for uniqueness. As you configure your identification system, see the Item uniqueness definition system rule help topic for more information.

The sequence generator doesn't try to enforce the rule. You can edit the value using, for example, a different prefix, suffix, or skip character.

If you need to reserve a block of numbers (such as for a contract design service), edit the Next number value. For example, if the current value is 100489 and you need to reserve a block of 100 numbers, modify the Next number to 100589.

Although you can modify a sequence after it's been in use, you should consider possible conflicts with existing items. Edit the value only when no other users are adding new item records.

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