Configure Document Series
Set reliable numbering for each document type and fiscal year before publication.
Document series control official codes. Drafts may display temporary codes; publishing resolves the active series and prevents duplicates.

Set the prefix, next number, padding, and active state; preview the resulting code.
Save and repeat for sales, purchase, stock, and finance documents your company publishes.

If a user manually changes an official code, Prospect requires confirmation. A duplicate code is rejected. If a document type has no active series, its new-document page says so and links to Settings → Document series; create or activate the correct series there rather than reusing another document type's sequence. Members without access to settings are asked to contact an administrator.
See Fiscal years and locked periods and Document numbering reference.