How To Fix USMD1B301 - &1 &2: A master record with value &4 does not exist for attribute &3

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1B - Meldungen: MDF Anschluss

• Message number: 301

• Message text: &1 &2: A master record with value &4 does not exist for attribute &3

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.

System Response

How to fix this error?

Procedure for System Administrators

If you have unintentionally entered value &V4&, correct your entry.
If you want to use value &V4&, you must first create a corresponding
master record.

Error message extract from SAP system. Copyright SAP SE.