How To Fix B1019 - Error when calling asynchronous Remote Function Call

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 019

• Message text: Error when calling asynchronous Remote Function Call

What causes this issue?

An error occurred when calling up a Remote Function Call on another
system.

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?

The causes possible are:
The partner system is not active.
You can test, in the definition of an RFC destination, whether it is
technically possible to reach it.
The function module called was not known in the partner system.
Consult your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1019 - Error when calling asynchronous Remote Function Call ?

  The SAP error message B1019, which indicates an error when calling an asynchronous Remote Function Call (RFC), can arise from various issues. Below are some common causes, potential solutions, and related information:
  Causes of B1019 Error
  
  
  Network Issues: Problems with the network connection between the systems can lead to this error. This includes issues like timeouts, disconnections, or network configuration problems.
  
  
  RFC Destination Configuration: The RFC destination may not be configured correctly. This includes incorrect parameters, such as the target system's IP address, port, or user credentials.
  
  
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations to execute the function module.
  
  
  Function Module Issues: The function module being called may not be available in the target system, or it may have been changed or deleted.
  
  
  System Load: High load on the target system can lead to timeouts or failures in processing the RFC call.
  
  
  Version Compatibility: Incompatibility between the SAP versions of the calling and target systems can also lead to errors.
  
  
  Solutions
  
  
  Check Network Connectivity: Ensure that there is a stable network connection between the systems. You can use tools like ping or traceroute to diagnose network issues.
  
  
  Verify RFC Destination: Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that all parameters are correct and that the connection test is successful.
  
  
  Review Authorizations: Check the user credentials being used for the RFC call. Ensure that the user has the necessary authorizations to execute the function module.
  
  
  Check Function Module Availability: Verify that the function module exists in the target system and is active. You can do this by using transaction SE37 to look up the function module.
  
  
  Monitor System Performance: Use transaction SM50 or SM66 to monitor the performance of the target system. If the system is under heavy load, consider optimizing performance or scheduling the RFC calls during off-peak hours.
  
  
  Check for Version Compatibility: Ensure that both systems are compatible in terms of SAP version and that there are no known issues with the specific function module being called.
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SE37: Function Module Maintenance
  SM50 / SM66: Process Overview
  ST22: Dump Analysis (to check for any ABAP runtime errors)
  
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address specific issues related to the B1019 error.
  
  
  Logs and Traces: Review the application logs (transaction SLG1) and the RFC trace (transaction SM21) for more detailed error messages that can provide additional context.
  
  
  By following these steps, you should be able to diagnose and resolve the B1019 error in your SAP environment. If the issue persists, consider reaching out to SAP support for further assistance.