Association to OPD &2 is missing for field &1

What causes this issue?

The operational data provider (ODP) &V2& represents the characteristic
&V3&. The same characteristic name is used for the field &V1&. However,
no associations to ODP &V2& are modeled.

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?

Model the association between field &V1& and ODP &V2& or use a different
characteristic name for the field.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.