How To Fix DNO157 - Installation number not known in the SAP customer notification system

SAP Error Message - Details

• Message type: E = Error

• Message class: DNO - Messages for General Notifications

• Message number: 157

• Message text: Installation number not known in the SAP customer notification system

What causes this issue?

One of the following problems occurred:
You did not specify an installation number
The customer number you specified does not correspond to the
installation number

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 your entries and then save the notification again.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DNO157 - Installation number not known in the SAP customer notification system ?

  The SAP error message DNO157, which states "Installation number not known," typically occurs in the context of the SAP Customer Notification System (CNS) when the system cannot find the specified installation number in the database. This can happen for several reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Incorrect Installation Number: The installation number entered may be incorrect or mistyped.
  Missing Installation Data: The installation number may not exist in the system, possibly due to data not being created or deleted.
  Authorization Issues: The user may not have the necessary authorizations to view or access the installation data.
  Data Synchronization Issues: There may be issues with data synchronization between different systems or modules within SAP.
  Configuration Issues: The configuration settings for the Customer Notification System may not be set up correctly.
  
  Solutions:
  
  Verify Installation Number: Double-check the installation number for accuracy. Ensure that it is entered correctly without any typos.
  Check Installation Data: Use transaction codes like IE03 (Display Equipment) or IE02 (Change Equipment) to verify if the installation number exists in the system.
  Review Authorizations: Ensure that the user has the necessary authorizations to access the installation data. This may involve checking roles and permissions in the user profile.
  Data Maintenance: If the installation number does not exist, it may need to be created. This can be done through the appropriate transaction codes (e.g., IE01 for creating equipment).
  Consult with Basis Team: If there are suspected synchronization issues, consult with the SAP Basis team to check for any underlying system issues or data inconsistencies.
  Configuration Review: Review the configuration settings for the Customer Notification System to ensure everything is set up correctly.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IE01, IE02, IE03, and CRMD_ORDER for managing installations and customer notifications.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review SAP documentation related to the Customer Notification System for best practices and configuration guidelines.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.