Hi,
Please check the following:
1. whether "GR Non-Valuated" flag is maintained for the item in the PO - delivery tab.
If so, system wont generate any accounting docs during GR
2. Material is of material type with value update in the valuation area. Please check in OMS2
3. Movement type used in GR - If its 103 movement, it wont generate any accounting doc.
4. Please check the price control of the material. If its V and "free item" indicator is flagged in the PO, it wont generate any accounting docs.
5. Please check the price control of the material If its S and standard price is maintained as zero in material master, it wont generate accounting doc.
Regards,
AKPT