How To Fix B1155 - Message type & is not within the permitted SAP name range

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 155

• Message text: Message type & is not within the permitted SAP name range

What causes this issue?

Name &V1& is not in the permitted name range for SAO system. You should
therefore not create message type &V1& in this system.

How to fix this error?

Choose another name for the message type you are trying to create.
Message types in the SAP name range may not begin with <LS>Y</> or
<LS>Z</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1155 - Message type & is not within the permitted SAP name range ?

  The SAP error message B1155, which states "Message type & is not within the permitted SAP name range," typically occurs when you are trying to use a message type that does not conform to the naming conventions or restrictions set by SAP. This error is often encountered in the context of IDoc processing or when working with message types in the SAP system.
  Cause:
  
  Invalid Naming Convention: The message type you are trying to use does not adhere to the naming conventions defined by SAP. SAP message types must follow specific rules regarding length and character usage.
  Custom Message Type: If you are trying to create or use a custom message type, it may not be defined correctly or may not fall within the allowed range of names.
  Configuration Issues: There may be issues in the configuration of the IDoc or message type settings in the SAP system.
  
  Solution:
  
  Check Naming Conventions: Ensure that the message type you are using follows the SAP naming conventions. Typically, message types should be in uppercase and can be a maximum of 30 characters long.
  Use Standard Message Types: If possible, use standard message types provided by SAP instead of creating custom ones. This can help avoid naming issues.
  Define Custom Message Types Correctly: If you need to create a custom message type, ensure that it is defined correctly in the relevant transaction (e.g., WE81 for message types).
  Review Configuration: Check the configuration settings related to IDocs and message types in the SAP system. You can use transaction codes like WE30 (IDoc type) and WE81 (Message type) to review and adjust settings.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on naming conventions and message type configurations.
  
  Related Information:
  
  Transaction Codes: 
  
  WE30: IDoc Type Definition
  WE81: Message Type Definition
  WE20: Partner Profiles
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to message types and IDocs.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the B1155 error and ensure that your message types are correctly configured within the SAP system.