How To Fix DMCLG526 - Different relation types in structure relation &1 << &2 in '&3' and '&4'

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 526

• Message text: Different relation types in structure relation &1 << &2 in '&3' and '&4'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG526 - Different relation types in structure relation &1 << &2 in '&3' and '&4' ?

  The SAP error message DMCLG526 indicates that there is a mismatch in the relation types defined in a structure. This error typically occurs when you are trying to create or modify a data model or structure in SAP, and the system detects that the relation types between two entities (or tables) are inconsistent.
  Cause:
  The error message DMCLG526 is triggered when:
  
  There are different relation types defined for the same entities in the data model.
  The structure is expecting a certain type of relationship (e.g., one-to-many, many-to-one) but finds a different type defined in the metadata.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check the Data Model: Review the data model or structure where the error occurred. Look for the entities involved (indicated by &1 and &2 in the error message) and their defined relationships.
  
  
  Verify Relation Types: Ensure that the relation types between the entities are consistent. If one entity is defined as having a one-to-many relationship with another, make sure that this is reflected in all relevant parts of the data model.
  
  
  Modify the Structure: If you find that the relation types are indeed different, you will need to modify the structure to ensure that the relation types match. This may involve changing the relationship type in one of the entities or adjusting the data model to align with the intended design.
  
  
  Check for Dependencies: Sometimes, other parts of the data model may depend on the relationships you are trying to modify. Ensure that any changes you make do not violate other dependencies or constraints.
  
  
  Test Changes: After making the necessary adjustments, test the changes to ensure that the error no longer occurs and that the data model behaves as expected.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or others depending on where you are working in the SAP system.
  Documentation: Refer to SAP documentation or help resources for more detailed information on data modeling and relationship types.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.