Diagnosis
Taxes can only be determined from the G/L line items if the open itemsall have the same tax jurisdiction.
However, in this case tax jusrisdictions &V1& and &V2& both appear inthe open items, and G/L line items therefore cannot be assigned to taxjurisdictions.

System Response
Taxes are not automatically calculated from the G/L line items.

Procedure
In the current transaction, activate the setting Taxes -> Manualentry or Taxes -> Calculate from open items".