How To Fix /STMC/CR_MSG691 - Error while reading HTTP connection &1; rc=&2

SAP Error Message - Details

• Message type: E = Error

• Message class: /STMC/CR_MSG -

• Message number: 691

• Message text: Error while reading HTTP connection &1; rc=&2

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 /STMC/CR_MSG691 - Error while reading HTTP connection &1; rc=&2 ?

  The SAP error message /STMC/CR_MSG691 indicates that there was an issue while trying to read an HTTP connection. The message typically includes two parameters: &1, which represents the HTTP connection name, and &2, which represents the return code (rc) from the operation.
  Causes
  
  Network Issues: There may be network connectivity problems between the SAP system and the target HTTP service.
  Configuration Errors: The HTTP connection might not be configured correctly in the SAP system.
  Service Unavailability: The target HTTP service might be down or not reachable.
  Authorization Issues: The user or service account may not have the necessary permissions to access the HTTP service.
  Timeouts: The request may be timing out due to slow response times from the target service.
  Firewall or Proxy Issues: Firewalls or proxy settings may be blocking the connection.
  
  Solutions
  
  Check Network Connectivity: Ensure that the SAP system can reach the target HTTP service. You can use tools like ping or telnet to test connectivity.
  Review HTTP Connection Configuration: Go to transaction SM59 in SAP and check the configuration of the HTTP connection. Ensure that the connection parameters (like URL, port, etc.) are correct.
  Check Service Status: Verify that the target HTTP service is up and running. You can try accessing the service from a web browser or using tools like curl or Postman.
  Review Authorization: Ensure that the user or service account has the necessary authorizations to access the HTTP service.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the HTTP connection configuration.
  Check Firewall/Proxy Settings: If applicable, review firewall and proxy settings to ensure that they are not blocking the connection.
  
  Related Information
  
  Transaction SM59: This transaction is used to manage RFC (Remote Function Call) destinations, including HTTP connections.
  Transaction ST22: Check for any dumps that might provide more context on the error.
  Transaction SLG1: Use this transaction to check application logs for any related error messages.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address this specific error or provide additional troubleshooting steps.
  
  If the issue persists after checking the above points, consider reaching out to your SAP Basis team or SAP support for further assistance.