Cannot enter seg. dependent MRP genral data; segment is not MRM relevant

What causes this issue?

When you maintain segmentation dependent MRP data, the characteristics
of the segmentation structure are not MRM relevant.

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?

You must set the characteristics as MRM if you want to maintain a
segmentation structure for a material. You can do this using CT04
transaction (change characteristic). In the <ZK>Additional </>Data tab,
click the <ZK>Relevance </>button to maintain relevance for the selected
characteristic.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.