Location/acct assignment data does not exist for PM notification &

What causes this issue?

Each PM notification refers to location data which is either allocated
through the functional location or the equipment, or directly through
the notification. This location data does not exist for this PM
notification.

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?

Inform your system administrator.

Error message extract from SAP system. Copyright SAP SE.