How To Fix FL391 - Reference type & does not observe the naming convention

FL391 - Overview

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 391

• Message text: Reference type & does not observe the naming convention

What causes this issue?

You may use types in interfaces which are stored in the Dictionary.
These must be in a type pool. According to the naming convention, all
types begin with the type pool name followed by an underscore '_' as a
separator.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL391 - Reference type & does not observe the naming convention ?

  The SAP error message FL391 indicates that a reference type does not adhere to the required naming conventions. This error typically arises in the context of Financial Accounting (FI) or Asset Accounting (AA) when creating or modifying reference types for fixed assets.
  
  Cause:
  The error is triggered when the reference type you are trying to use does not conform to the naming conventions set by SAP. This could be due to:
  
  The reference type name containing invalid characters.
  The reference type name being too long or too short.
  The reference type not following the required format (e.g., it may need to start with a specific letter or follow a specific pattern).
  
  
  Solution:
  To resolve the FL391 error, you can take the following steps:
  
  
  Check Naming Conventions: Review the naming conventions for reference types in your SAP system. Ensure that the reference type you are trying to create or modify adheres to these conventions.
  
  
  Modify the Reference Type: If the