How To Fix VT628 - Access type C is not defined for key fields

SAP Error Message - Details

• Message type: E = Error

• Message class: VT - Vertriebstabellen

• Message number: 628

• Message text: Access type C is not defined for key fields

What causes this issue?

Access type 'C' should be assigned to the key field in the condition
table.
Key fields and data fields are defined when you create the condition
table. The system gives the data fields access type 'C'.

How to fix this error?

Key fields that should return values in the access are given access
type 'B'.

Error message extract from SAP system. Copyright SAP SE.