How To Fix /SAPAPO/CTM1809 - Error in server selection. All servers used

/SAPAPO/CTM1809 - Overview

• Message type: E = Error

• Message class: /SAPAPO/CTM1 -

• Message number: 809

• Message text: Error in server selection. All servers used

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CTM1809 - Error in server selection. All servers used ?

  The SAP error message /SAPAPO/CTM1809 indicates that there is an issue with server selection in the SAP Advanced Planning and Optimization (APO) system, specifically in the context of the Capable-to-Match (CTM) planning process. The message "Error in server selection. All servers used" suggests that the system is unable to find an available server to process the request, as all configured servers are currently in use or unavailable.
  Causes:
  
  All Servers Busy: All the servers configured for the CTM process are currently busy processing other requests.
  Server 
  Configuration Issues: There may be issues with the configuration of the servers in the system, such as incorrect settings or inactive servers.
  Resource Limitations: The system may be hitting resource limits, such as memory or processing power, which prevents new requests from being processed.
  Network Issues: There could be network connectivity issues that prevent the system from communicating with the servers.
  Locking Issues: There may be locks on the resources