Incorrect values entered for settling a blanket purchase order

What causes this issue?

You are entering data for settling a blanket purchase order or a
service purchase order where you have not specified service-based
settlement. The following fields in table <LS>ItemData</> must not be
filled:
Subsequent credit (DE_CRE_IND)
Quantity (QUANTITY)
PO unit of measure (PO_UNIT)
PO unit of measure in ISO code (PO_UNIT_ISO)
Quantity in PO price unit of measure (PO_PR_QNT)
PO price unit of measure (PO_PR_UOM)
PO price unit of measure in ISO code (PO_PR_UOM_ISO)

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the above fields. Change your entries where required.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.