Enter the to storage location or maintain default values

What causes this issue?

Either you have not entered a receiving storage location or the default
values have not been maintained.

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?

Enter a receiving storage location or maintain the default values.
Various options are available for entering default values:
Enter a receiving storage location in the production version in the
material master record. The system then proposes this value here.
Enter a production storage location in the material master record. The
system proposes this value here if no receiving storage location has
been maintained in the production version.

Error message extract from SAP system. Copyright SAP SE.