How To Fix DMCLG687 - Migration object &1 cannot be generated due to XML schema differences

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 687

• Message text: Migration object &1 cannot be generated due to XML schema differences

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG687 - Migration object &1 cannot be generated due to XML schema differences ?

  The SAP error message DMCLG687 indicates that there is an issue with the generation of a migration object due to differences in the XML schema. This typically occurs during data migration processes, such as when using the Data Migration Cockpit or other tools that rely on XML schemas for data mapping and transformation.
  Cause:
  The error can be caused by several factors, including:
  
  
  Schema Mismatch: The XML schema defined for the migration object does not match the expected schema in the target system. This can happen if there have been changes in the data model or if the source and target systems are not aligned.
  
  
  Version Differences: If the source and target systems are running different versions of SAP, there may be discrepancies in the data structures that lead to schema differences.
  
  
  Configuration Issues: Incorrect configuration settings in the migration tool or the data mapping process can lead to schema validation errors.
  
  
  Data Type Incompatibility: If the data types defined in the XML schema do not match the data types in the target system, this can cause the migration object to fail to generate.
  
  
  Solution:
  To resolve the DMCLG687 error, you can take the following steps:
  
  
  Check XML Schema: Review the XML schema definitions for both the source and target systems. Ensure that they are compatible and that any changes in the data model are reflected in the schema.
  
  
  Align Versions: If there are version differences between the source and target systems, consider upgrading or aligning the systems to ensure compatibility.
  
  
  Review Configuration: Check the configuration settings in the migration tool. Ensure that all necessary parameters are correctly set and that the mapping is properly defined.
  
  
  Validate Data Types: Ensure that the data types in the XML schema match those in the target system. If there are discrepancies, adjust the schema or the data types accordingly.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration object you are working with. There may be known issues or additional steps required for certain objects.
  
  
  Test Migration: After making the necessary adjustments, perform a test migration to verify that the issue has been resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on migration issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Data Migration Cockpit: Familiarize yourself with the Data Migration Cockpit and its functionalities, as it may provide additional tools for troubleshooting and resolving migration issues.
  
  By following these steps, you should be able to identify the root cause of the DMCLG687 error and implement a solution to successfully generate the migration object.