I am creating a PO in SRM with one line item as Service and the rest with materials (materials were set up as services in SRM).
This goes and reflects in ECC5 with the first item from SRM created as a line item 0001 in ECC5 and the rest of the SRM items are added as services to this line item 0001.
Then:
Till the time of GR, the materials are validated against an external tax system and the tax exemption is carried out.
However as soon as the IR takes place, the materials are being taxed again. (At this point the external tax system does not get triggered).
How to control this tax calculation?