How To Fix UCFE002 - Combined structure &1 contains only one structure

SAP Error Message - Details

• Message type: E = Error

• Message class: UCFE - Messages for Data Entry Layouts

• Message number: 002

• Message text: Combined structure &1 contains only one structure

What causes this issue?

Combined structure &SYST-MSGV1& contains only one structure.
A combined structure is used to group together several structures. If a
combined structure contains only one structure then this is not useful.

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?

Insert all those structures into the combined structure, which you want
to group together with the combined structure.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UCFE002 - Combined structure &1 contains only one structure ?

  The SAP error message UCFE002 indicates that a combined structure in your SAP system contains only one structure. This typically occurs in the context of using combined structures in the SAP system, which are used to group multiple structures together for various purposes, such as data transfer or reporting.
  Cause:
  The error arises when you attempt to create or use a combined structure that is expected to contain multiple structures, but it only contains one. This situation can occur due to:
  
  Incorrect Configuration: The combined structure may have been incorrectly defined or configured, leading to the inclusion of only one structure.
  Data Model Changes: Changes in the underlying data model or structures may have resulted in the combined structure being left with only one component.
  Development Errors: Errors during the development or modification of structures can lead to this issue.
  
  Solution:
  To resolve the UCFE002 error, you can take the following steps:
  
  
  Check the Combined Structure Definition:
  
  Go to the transaction code SE11 (Data Dictionary) and check the definition of the combined structure that is causing the error.
  Ensure that it is defined correctly and contains the intended multiple structures.
  
  
  
  Modify the Combined Structure:
  
  If the combined structure is indeed supposed to contain multiple structures, you may need to add the missing structures to it.
  If it is only meant to contain one structure, consider whether you need to use a combined structure at all.
  
  
  
  Review Related Structures:
  
  Check the individual structures that are supposed to be part of the combined structure. Ensure they are correctly defined and active.
  
  
  
  Consult Documentation:
  
  Review any relevant SAP documentation or notes related to combined structures to ensure you are following best practices.
  
  
  
  Testing:
  
  After making changes, test the functionality to ensure that the error is resolved and that the combined structure behaves as expected.
  
  
  
  Seek Help from SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is impacting critical business processes.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE37 (Function Module), and SE24 (Class Builder) may be useful for checking and modifying structures.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Documentation: Review SAP Help documentation for combined structures and data modeling best practices.
  
  By following these steps, you should be able to identify the cause of the UCFE002 error and implement a solution to resolve it.