Offer Numbers
Each document (quote, estimate, …) gets a unique identifier called offer number
The offer number consists of:
leading letter identifying the type: e.g. q for quote, e for estimate
the year
the account (Kostenträger):
Extract or add the account here:
Incremental id number
Format
<TypeLetter><Year>-<Account>-<DocumentId>
Example: q2020-134-01