How To Fix MSITEM011 - Internal error in REUSE_ALV_FIELDCATALOG_MERGE

MSITEM011 - Overview

• Message type: E = Error

• Message class: MSITEM - Line Item Display with ALV, RFITEM**

• Message number: 011

• Message text: Internal error in REUSE_ALV_FIELDCATALOG_MERGE

What causes this issue?

The function module REUSE_ALV_FIELDCATALOG_MERGE reports an internal
error during the determination of the field catalogs for the structure
RFPOSEXT.

System Response

The program cannot be carried out.

How to fix this error?

Contact SAP.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

MSITEM011 - Details

• The SAP error message MSITEM011 indicating an "Internal error in REUSE_ALV_FIELDCATALOG_MERGE" typically occurs when there is an issue with the field catalog used in an ALV (ABAP List Viewer) report. This error can arise due to various reasons, including inconsistencies in the field catalog, incorrect data types, or issues with the data being processed.
  Causes:
  
  Field Catalog Issues: The field catalog may not be properly defined or may contain invalid entries.
  Data Type Mismatches: There may be a mismatch between the data types of the fields in the internal table and those defined in the field catalog.
  Duplicate Field Names: If there are duplicate field names in the field catalog, it can lead to this error.
  Inconsistent Data: The data being processed may have inconsistencies or may not match the expected structure.
  Memory Issues: In some cases, memory allocation issues can lead to internal errors.
  
  Solutions:
  
  
  Check Field Catalog: Review the field catalog definition to ensure that all