Numbering sequences: identifiers people can read — Good to know

• Changing a format does not renumber existing records. Past values keep the format they were issued under, which is usually what you want and always what happens. • If several sequences could match a record, priority decides — two sequences at the same priority make the outcome depend on ordering, so give them distinct priorities. • Allocating on transition means a record has no identifier until it gets there. Don't build a print template that assumes the number exists in the draft state.