No planning step links have been created

What causes this issue?

You have not created any links between planning steps yet.

System Response

INCLUDE ISR_VERARBEITUNG OBJECT DOKU ID TX

How to fix this error?

Create planning step links.

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.