En las condiciones del IVA que tienes definidas, qué configuración tiene?
La nota 872449 - Tax determination in Sales and Distribution
de SAP dice:
FF 747: The tax amount must not be greater than the tax base.
As only tax condition percentages are supported, the tax amount (condition value) may never be greater than the tax base.
The system issues this error message if you try to set a quantity dependent tax condition. This is not supported in the standard system. For information on this situation, refer to consulting SAP Note 184985.
Por eso te decía que revises la otra.
Si no sabes cómo ver notas de SAP, tienes que contactar a un BASIS de tu empresa, que te proveerá las notas para leer, o bien un user/pass para acceder al sitio de las notas oficiales de SAP.
No es que yo no quiera pasarte las mismas, es que SAP no permite tal cosa.
La nota en cuestión indica la siguiente solución:
Solution
Instead of using a condition of class ‘D’, you should define the tax ‘not by percentage’ as a normal surcharge condition (condition class ‘A’). You can then provide this surcharge condition depending on your requirements with a quantity based, absolute, weight dependent and so on calculation rule.
To prevent manual changes to the defined ‘tax’ by the end user, you should also deactivate flag ‘Delete’ and set ‘Manual input’ to ‘D’ (‘Not possible to process manually’).
The condition values determined for the condition should also be posted to a special FI account to prevent that they are mixed with normal revenues or tax amounts.