Diagnosis
The system supports intramaterials for containerresources only if the header material of the bill of material (BOM)is to be charged to a container resource. You must include the headermaterial as an intra material with the same negative quantity in theBOM of this header material.
However, intra material &V1& is not the same as header material &V2&.

Procedure
Make sure that your material list contains material &V2& as an intramaterial.
Assign this intra material to the phase.
Create the relevant productflow ID.
Example:
Header material &V2&
Item Type,,Material Component,,Quantity
L,,Material MATXY ,,Positive quantity
M,,Intra material &V2&,,Negative quantity