How To Fix WW304 - Call failed in the target system

WW304 - Overview

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 304

• Message text: Call failed in the target system

What causes this issue?

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

System Response

How to fix this error?

INCLUDE ISR_SYSTEMFEHLER

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WW304 - Call failed in the target system ?

  The SAP error message WW304, which states "Call failed in the target system," typically occurs in the context of Remote Function Calls (RFC) or when trying to execute a function module in a different SAP system. This error can arise due to various reasons, and understanding the cause is crucial for finding a solution.
  Causes of WW304 Error
  
  
  Network Issues: There may be connectivity problems between the source and target systems, such as network outages or misconfigured network settings.
  
  
  Authorization Issues: The user executing the function may not have the necessary authorizations in the target system.
  
  
  Configuration Errors: The RFC destination may not be correctly configured in the source system, leading to failed calls.
  
  
  System Availability: The target system may be down or undergoing maintenance, making it unavailable for calls.
  
  
  Function Module Issues: The function module being called may not exist in the target system, or it may have been changed or deactivated.
  
  
  Data Issues: The data