How To Fix CACSPY303 - Error in calling system &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CACSPY - Settlement

• Message number: 303

• Message text: Error in calling system &1

What causes this issue?

An RFC (Remote Function Call) could not be executed. Destination &V1&
could not be called. The reasons for this could be:
Remote destination is incorrectly maintained
System being called is inactive
Function module is missing in the target system

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

Termination of current posting or information message

How to fix this error?

INCLUDE ISIS_NA_SYSADMIN OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CACSPY303 - Error in calling system &1 ?

  The SAP error message CACSPY303, which states "Error in calling system &1," typically indicates that there is an issue with the communication between the SAP system and another system (often a connected system or an external application). This error can arise in various contexts, such as when using remote function calls (RFC), web services, or other integration scenarios.
  Possible Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system.
  Configuration Errors: Incorrect configuration settings in the RFC destination or the external system can lead to this error.
  Authorization Issues: The user or service account used to connect to the external system may not have the necessary permissions.
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  Data Format Issues: The data being sent to the external system may not be in the expected format, leading to processing errors.
  Timeouts: The call to the external system may be timing out due to long processing times.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the SAP system can reach the target system. You can use tools like ping or telnet to test connectivity.
  Review RFC Destination: Go to transaction SM59 in SAP and check the configuration of the RFC destination. Ensure that the settings (such as the target host, service, and logon credentials) are correct.
  Check Authorizations: Verify that the user or service account has the necessary authorizations to access the external system.
  Monitor System Status: Check if the target system is up and running. If it is down, you may need to wait until it is back online.
  Review Logs: Check the application logs in both the SAP system (using transaction SLG1) and the target system for any error messages that could provide more context.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the RFC destination or the relevant configuration.
  Data Validation: Ensure that the data being sent to the external system is valid and in the expected format.
  
  Related Information:
  
  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 the documentation for the specific integration scenario you are working with (e.g., RFC, web services) for any additional configuration or troubleshooting tips.
  Community Forums: Consider searching or posting on SAP community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to engage with SAP support or your internal IT team for further investigation.