Accessible field if the account on the line is a "collective" type account, but not mandatory.
If the BP field of one of the structure lines is empty, when the latter is preloaded, the operation mode will differ depending on the original function:
- if the structure is called from the journal entry, a parameter entry window is used to enter the BP code. The latter is then used on the auxiliarized lines generated by the structure, unless they already had a BP,
- if the structure is called from the BP invoicing, the BP on the invoice is used on the auxiliarized lines generated by the structure, unless they already had a BP.