Assign a database table to planning step &1

What causes this issue?

You want to create a lin using planning step &V1& and have selected an
SAP link method. Prerequisite for this is that a database table be
assigned to both of the planning steps in planning step maintenance.

System Response

The link method is reset.

How to fix this error?

Assign a database table to planning step &V1& in planning step
maintenance.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.