It would be a great idea to increase the standard lenght of this field from 20 to 30 or 40 characters, even create an activity code if there is no coding involved. Nowadays, some suppliers have very long invoice numbers. As far as I know, this field (BPRVCR) is present in several tables (and their related masks):
- Supplier Invoice header (PINVOICE)
- Accounting entries header (GACCENTRY)
- Accounting entries temporal table (GACCTMP)
- Spanish Tax work file (DCLVATSPA)
This field is also present in the sales invoice header table (SINVOICE), among others.