VPD050 - Partner function &1 cannot be entered manually

SAP Error Message - Details

• Message type: E = Error

• Message class: VPD - Messages in SD Partner Processing

• Message number: 050

• Message text: Partner function &1 cannot be entered manually

What causes this issue?

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

There is a distinct relationship between partner function &V1& and
returns data. The system determines this partner function automatically
based on entered returns data.
You specify the partner functions for the
<DS:DE.MSR_3RD_PARTY_SUPPLIER>supplier</> and the corresponding
return-to
<DS:DE.MSR_3RD_PARTY_RETURN_TO>customer</> in Customizing for Advanced
Returns Management in the client level settings.

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.