MRP indicator & will be copied for storage location &

What causes this issue?

While collectively entering storage location data for a material
(transaction MMSC), you specified a storage location, for which the
system has proposed the MRP indicator from the settings in Customizing
(transaction OMIR).

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?

Check the default value and, if necessary, correct it.

Error message extract from SAP system. Copyright SAP SE.