Not possible to generate urging messages for all documents

What causes this issue?

The system was not able to generate urging messages (expediters) for
all relevant purchasing documents.
Possible causes:

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

No messages with the following requirements have been entered in the
message schema:
Requirement 103 in the case of urging messages relating to to overdue
deliveries or overdue quotations
Requirement 107 in the case of urging messages relating to overdue
order acknowledgments
No urging message for the print operation has been entered in the
fine-tuned message control facility:
Print operation 3 for urging messages/reminders
Print operation 7 for order acknowledgment expediters
No condition records have been created for the urging message type(s).
RESET N1

System Response

How to fix this error?

Check
The message schema you are using
The fine-tuned message control facility
Whether condition records have been created for the urging message
types

Error message extract from SAP system. Copyright SAP SE.