Diagnosis
You want to change the value of a separate VAT coefficient. This is,however, not possible because the system has already performed one ofthe following operations for the given period:

• Input VAT separation


• Linking of outgoing 0% invoices


• Tax transfer using Secondary Events program (J3RFUM26)

It is also not possible to change a coefficient for which the system hasassigned the value "0". The system does this for the following monthswhen you select the quarter as the fiscal period and enter a value forthe first month.

Procedure
You have the following alternatives:


• If you have only separated input VAT, you must delete the values saved
to the database.You can then enter new values for the coefficients.

• If you have linked outgoing 0% invoices to incoming invoices, you must
delete the values saved to the database for linking and input VATseparation.

• If you have already transferred tax, you cannot change these values.


• If you are using the quarter as the period, you cannot change a value
that the system has set to "0".