You may not delete PI sheet &1

What causes this issue?

PI sheets for which process data documentation is required may not be
deleted until the corresponding batch record has been created.
You have, however, attempted to delete at least one PI sheet for which
process data documentation is required and for which the corresponding
batch record has not yet been created.
The system does not delete the PI sheet you have selected.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.