How To Fix CRM_APO204 - Connection to APO interrupted / confirmations are unreliable.

CRM_APO204 - Overview

• Message type: E = Error

• Message class: CRM_APO - Dates

• Message number: 204

• Message text: Connection to APO interrupted / confirmations are unreliable.

What causes this issue?

The connection to the APO system was terminated between the current
availability check and the preceding one. The items confirmed by APO so
far are unreliable because they cannot be cancelled or saved in the APO
system. Moreover, there may be a technical problem with APO which leads
to a loss of data of the (temporary) confirmations.

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?

As soon as the connection to the APO system has been re-established,
you must carry out the availability check once again for the affected
items in order to achieve a reliable result.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CRM_APO204 - Details

• The SAP error message "CRM_APO204 Connection to APO interrupted / confirmations are unreliable" typically indicates a problem with the connection between the SAP Customer Relationship Management (CRM) system and the Advanced Planning and Optimization (APO) system. This can lead to unreliable confirmations for sales orders, deliveries, or other transactions that depend on real-time data from APO.
  Causes:
  
  Network Issues: Temporary network disruptions can interrupt the connection between CRM and APO.
  System Configuration: Incorrect configuration settings in either the CRM or APO system can lead to connection issues.
  APO System Downtime: The APO system may be down for maintenance or experiencing performance issues.
  Authorization Issues: Insufficient user authorizations can prevent successful communication between the systems.
  Data Consistency Issues: Inconsistent or corrupted data in either system can lead to communication failures.
  Middleware Issues: If you are using middleware (like SAP PI/PO) for communication, issues in the middleware can also cause this error.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no