It was not possible to schedule order &1 to the date entered

What causes this issue?

Order &V1& could not be scheduled to &V2& in location &V3& because
there is no available capacity at this time.

System Response

Order &V1& is deallocated.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.