Tax code is not picked up while doing ERS with T. Code. MRRL
I have got one Scheduling Agreement of certain material and based on goods receipt quantity user is performing ERS with T. Code MRRL. but when we are seeing different invoice documents generated by ERS with T. Code MIR4 for the same Scheduling Agreement, we are finding in some invoice document(In Basic data tab) didn't pick Tax Code and some invoice documents have picked Tax code.
Following things are already maintained.
1) Scheduling agreement is having tax code maintained.
2) ERS field is ticked in Scheduling agreement
3) Vendor is ticked for ERS
4) GR based IV is ticked in Scheduling agreement
Can some body suggest why this is happening