Following is some information about how check numbering works.
The following validations are imposed on all check number fields.
Check numbers CANNOT:
- Begin with a non-numeric character.
- End with an "A" (because that is reserved for ATM checks).
- Use a check number that was already used.
- Include any specials characters EXCEPT for periods (.) or hyphens (-).
Skipping to the Next Available Check Number
Abacus Accounting skips to the next available check number when auto-filling the next check number if the next check number after the last check posted was already used.
Maintaining Check Numbering Conventions
When printing checks for multiple vendors (or multiple invoices on the same vendor where multiple invoices per check is disabled for that vendor), the check number auto-assigned to subsequent checks tries to maintain the same check numbering convention if it includes non-numeric characters. For example, if the first check number is 100D, the second check will auto-post as 101D, the third check will auto-post as 102D, and so on.