How To Fix EA479 - Multiple basic types assigned to extension & (see long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: EA - IDoc Basis Messages

• Message number: 479

• Message text: Multiple basic types assigned to extension & (see long text)

What causes this issue?

Extension &v1& was used in Release 3.0/3.1 with several basic types.
For Release 4.0, however, an extension can only be linked with one
basic type, in order to simplify the complexity of the dependencies.

System Response

Please note that IDoc processing is not impaired at first. Problems can
arise if changes are made to extension &v1& or one of the basic types
concerned.
The tests regarding segment relationships are only executed with the
basic type assigned. The other basic types (also currently in use) are
ignored.

How to fix this error?

If you plan to process extension &v1& further, you should proceed as
follows:
create several identical copies of your extension
assign one of the basic types used to each of these copies
modify the partner profiles and customer exits that have used the old
extension &v1& until now, and replace the name of the extension with
that of one of your copies.
You should now have created a number of independent extensions, each of
which is linked with a single basic type.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EA479 - Multiple basic types assigned to extension & (see long text) ?

  The SAP error message EA479 indicates that there are multiple basic types assigned to an extension in the context of the Data Dictionary (DDIC) in SAP. This typically occurs when you are trying to create or modify a structure or table that has an extension, and the system detects that more than one basic type has been assigned to that extension, which is not allowed.
  
  Cause:
  
  Multiple Assignments: The primary cause of this error is that the extension of a structure or table has been assigned multiple basic types, which is not permissible in SAP.
  Inconsistent Data Dictionary: There may be inconsistencies in the Data Dictionary where the same extension is incorrectly linked to different basic types.
  Development Errors: Errors during the development process, such as incorrect modifications or imports of objects, can lead to this situation.
  
  
  Solution:
  
  
  Check the Data Dictionary: 
  
  Go to the Data Dictionary (transaction SE11) and check the structure or table that