SAP Message WMOD026 - The quantity to be allocated is 0

Diagnosis
The total quantity of the generic material to be split up among thevariants is zero.

System Response
No allocation is possible.

Procedure
INCLUDE ISR_VERWALTUNG OBJECT DOKU ID TX

Procedure for System Administration
This error was probably caused by a faulty call to the function modulethat splits up the quantity among the variants.