How To Fix CRM_IC_APPL_UI_CHMSG205 - Response ID mismatch (protocol error)

SAP Error Message - Details

• Message type: E = Error

• Message class: CRM_IC_APPL_UI_CHMSG - Message class for CRM_IC_APPL_UI_COMMCHANNELS

• Message number: 205

• Message text: Response ID mismatch (protocol error)

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CRM_IC_APPL_UI_CHMSG205 - Response ID mismatch (protocol error) ?

  The SAP error message "CRM_IC_APPL_UI_CHMSG205 Response ID mismatch (protocol error)" typically occurs in the context of the SAP CRM Interaction Center (IC) when there is a communication issue between the client and the server. This error indicates that the response ID received does not match the expected ID, which can be caused by various factors.
  Causes:
  
  Network Issues: Intermittent network connectivity problems can lead to lost or corrupted messages.
  Session Timeout: If the session has timed out, the client may receive a response that does not match the expected ID.
  Browser Issues: Sometimes, browser-related issues (like caching or cookies) can interfere with the communication.
  Configuration Errors: Incorrect configuration settings in the SAP CRM system or the Interaction Center can lead to protocol mismatches.
  Version Mismatch: If there are discrepancies between the versions of the client and server, it may lead to protocol errors.
  Load Balancer Issues: If a load balancer is used, it may not be routing requests correctly, leading to mismatched responses.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues affecting communication between the client and server.
  Session Management: Make sure that the session is active and has not timed out. If it has, refresh the session or log in again.
  Clear Browser Cache: Clear the browser cache and cookies, or try accessing the application in a different browser or in incognito mode.
  Review Configuration: Check the configuration settings in the SAP CRM system to ensure they are correct and consistent.
  Update Software: Ensure that both the client and server are running compatible versions of the software. Update if necessary.
  Check Load Balancer Settings: If a load balancer is in use, verify its configuration to ensure it is routing requests correctly.
  SAP Notes: Check for any relevant SAP Notes or patches that may address this specific error. SAP frequently releases updates that fix known issues.
  
  Related Information:
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They may provide specific guidance based on your system configuration and logs.
  Logs and Traces: Review application logs and traces to gather more information about the error. This can help in diagnosing the root cause.
  Documentation: Refer to SAP documentation for the Interaction Center and CRM for any additional troubleshooting steps or best practices.
  
  By following these steps, you should be able to identify and resolve the "Response ID mismatch (protocol error)" in SAP CRM.