1Q401 - Endless loop in the definition of route &2 in bank area &1

SAP Error Message - Details

• Message type: E = Error

• Message class: 1Q - Messages In-House Banking

• Message number: 401

• Message text: Endless loop in the definition of route &2 in bank area &1

What causes this issue?

The definition of route &V2& in bank area &V1& contains errors. The
next In-House Cash Center to receive the order (bank key &V4&, in bank
country &V3&) is already defined in the route determination settings.
This has led to an endless loop.

System Response

Processing of the payment orders or payment requests is terminated.

How to fix this error?

Correct the above route in Customizing for <LS>SAP In-House Cash</>.

Error message extract from SAP system. Copyright SAP SE.

AnswerBot

• What is the cause and solution for SAP error message 1Q401 - Endless loop in the definition of route &2 in bank area &1 ?

  The SAP error message 1Q401 indicates that there is an "endless loop" in the definition of a route in a specific bank area. This typically occurs when there is a circular reference in the routing configuration, which can prevent the system from processing the route correctly.
  Cause:
  The error is usually caused by one of the following issues:
  
  Circular References: The route definition may have been set up in such a way that it refers back to itself, creating an endless loop.
  Incorrect Configuration: There may be incorrect or incomplete configuration in the routing settings for the bank area.
  Missing or Incorrect Data: Required data for the route may be missing or incorrectly defined, leading to the system being unable to resolve the route.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Route Definition:
  
  Go to the transaction code related to route maintenance (e.g., SPRO for configuration).
  Navigate to the relevant section for route definitions in the bank area.
  Review the route definitions for any circular references or incorrect settings.
  
  
  
  Correct Circular References:
  
  Identify any routes that may be referencing themselves or creating a loop.
  Modify the route definitions to eliminate any circular references.
  
  
  
  Validate Configuration:
  
  Ensure that all necessary data for the route is correctly defined and complete.
  Check for any missing entries or incorrect parameters in the route configuration.
  
  
  
  Test Changes:
  
  After making corrections, test the route to ensure that it processes correctly without generating the error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on route configuration and common pitfalls.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with a technical expert who specializes in SAP configuration.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO (for configuration), SE80 (for object navigator), or SE11 (for data dictionary) to help in troubleshooting.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that could resolve the issue.
  Testing Environment: If possible, replicate the issue in a testing environment to safely troubleshoot without affecting production data.
  
  By following these steps, you should be able to identify and resolve the cause of the 1Q401 error in your SAP system.