SAP Message >R006 - Terms of payment not valid from an FI-CA viewpoint

Diagnosis
The term of payment is not valid from a Contract AccountsReceivable and Payable viewpoint.
A maximum of one-level terms of payment (cash discount days + cashdiscount % / net days) can be processed in Contract Accounts Receivableand Payable.
INCLUDE FICA_NA_CUST OBJECT DOKU ID TX