How To Fix DMCLG520 - Data type of field '&1' (structure &2) different in '&3' and '&4'

DMCLG520 - Overview

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 520

• Message text: Data type of field '&1' (structure &2) different in '&3' and '&4'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG520 - Data type of field '&1' (structure &2) different in '&3' and '&4' ?

  The SAP error message DMCLG520 indicates a data type mismatch between fields in different structures or tables. Specifically, it points out that the data type of a field in one structure (or table) is different from the corresponding field in another structure (or table). This can occur during data transfer, mapping, or when trying to use fields from different sources that are expected to be compatible.
  
  Cause:
  
  
  Data Type Mismatch: The field &1 in structure &2 has a different data type compared to the same field in structures &3 and &4. This could be due to:
  
  Different definitions in the Data Dictionary (DDIC).
  Changes made to one of the structures without corresponding updates to the other.
  Incorrect mapping in data transfer processes (like IDocs, BAPIs, etc.).
  
  
  
  Inconsistent Data Models: If the structures are part of different modules or versions, they may have been updated independently, leading to inconsistencies.
  
  
  Custom Development: If custom fields or structures have been