How To Fix B1898 - Error in namespace prefixes of function; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 898

• Message text: Error in namespace prefixes of function; see long text

What causes this issue?

The function module &V1& and the function group &V2& are not in the
same namespace.

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?

Go back a step and generate the function module again.
When you choose the function module name, make sure that it starts
with the same namespace prefix as the function group.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1898 - Error in namespace prefixes of function; see long text ?

  The SAP error message B1898, which states "Error in namespace prefixes of function; see long text," typically occurs in the context of ABAP programming, particularly when dealing with function modules or classes that utilize namespaces. This error indicates that there is an issue with the way namespace prefixes are defined or used in the function module.
  Cause:
  
  Incorrect Namespace Prefix: The function module may be using an incorrect or undefined namespace prefix. This can happen if the function module is trying to reference objects (like classes or methods) that are not properly defined in the expected namespace.
  Missing or Misconfigured Namespaces: If the namespaces are not correctly configured in the system or if there are discrepancies in the naming conventions, this error can occur.
  Transport Issues: If the function module was transported from another system and the namespaces were not correctly set up in the target system, this could lead to this error.
  Syntax Errors: There may be syntax errors in the ABAP code that are causing the namespace resolution to fail.
  
  Solution:
  
  Check Namespace Configuration: Ensure that the namespaces are correctly defined in the system. You can check the namespace settings in transaction SE80 or SE11.
  Review Function Module Code: Look at the code of the function module to ensure that all namespace prefixes are correctly defined and used. Make sure that any classes or methods being called are correctly referenced.
  Correct Syntax Errors: If there are any syntax errors in the code, correct them. Use the ABAP editor to check for syntax errors and warnings.
  Transport Request Review: If the function module was transported, check the transport request to ensure that all necessary objects and dependencies were included and that the namespaces are correctly set up in the target system.
  Consult Documentation: Refer to the long text of the error message for more specific details about the issue. This can provide additional context or guidance on how to resolve the problem.
  
  Related Information:
  
  ABAP Development: Familiarity with ABAP programming and the use of function modules and classes is essential for troubleshooting this error.
  Namespace Management: Understanding how namespaces work in SAP and how to manage them can help prevent this error in the future.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  
  If the issue persists after following these steps, it may be beneficial to consult with a more experienced ABAP developer or reach out to SAP support for further assistance.