How To Fix RMPS_TRF123 - External entity &1 cannot contain any of the following characters: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RMPS_TRF - Message for transfer run time

• Message number: 123

• Message text: External entity &1 cannot contain any of the following characters: &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RMPS_TRF123 - External entity &1 cannot contain any of the following characters: &2 ?

  The SAP error message RMPS_TRF123 indicates that there is an issue with the external entity name in your SAP system. Specifically, it states that the external entity (which could be a vendor, customer, or any other entity) contains characters that are not allowed. The error message typically specifies which characters are causing the issue.
  Cause:
  The error is triggered when the external entity name includes one or more of the following:
  
  Special characters (e.g., &, %, $, #, etc.)
  Whitespace or leading/trailing spaces
  Any other characters that are not permitted by the system's naming conventions
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Entity: Determine which external entity is causing the error. The error message will usually provide the name of the entity (represented by &1).
  
  
  Check the Characters: Review the name of the external entity and identify any characters that are listed in the error message (represented by &2). 
  
  
  Modify the Name: 
  
  Remove or replace any invalid characters with acceptable ones.
  Ensure that there are no leading or trailing spaces in the name.
  Use only alphanumeric characters and any other characters that are allowed by your SAP configuration.
  
  
  
  Save Changes: After making the necessary changes, save the entity and try the operation again that triggered the error.
  
  
  Test: Perform a test to ensure that the error no longer occurs.
  
  
  Related Information:
  
  SAP Documentation: Refer to the SAP Help Portal or your organization's SAP documentation for specific guidelines on naming conventions for external entities.
  Transaction Codes: You may need to use specific transaction codes (like BP for Business Partner) to modify the external entity.
  Consult with SAP Support: If you continue to experience issues, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to resolve the RMPS_TRF123 error and ensure that your external entity names comply with SAP's requirements.