How To Fix DMC_RT_GEN045 - Parallelization not possible due to non-character-like key field

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_GEN - DMC: Nachrichten der Generierungfunktionen

• Message number: 045

• Message text: Parallelization not possible due to non-character-like key field

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 DMC_RT_GEN045 - Parallelization not possible due to non-character-like key field ?

  The SAP error message DMC_RT_GEN045 indicates that parallelization is not possible due to the presence of a non-character-like key field in the data model. This error typically arises in the context of data migration or data replication processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools.
  Cause:
  The error occurs when the system attempts to parallelize the processing of data records, but one or more key fields in the data model are not of a character-like type (e.g., they may be numeric or binary). Parallel processing is often used to improve performance, but it requires that the key fields be suitable for such operations. Non-character-like key fields can lead to issues with data consistency and integrity when processed in parallel.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Data Model: Check the data model you are using in the DMC. Identify the key fields and their data types. Ensure that all key fields are character-like (e.g., CHAR, VARCHAR).
  
  
  Modify Key Fields: If you find any key fields that are non-character-like, consider modifying them to be character-like if possible. This may involve changing the data type in the source system or transforming the data during the migration process.
  
  
  Adjust Parallelization Settings: If modifying the key fields is not feasible, you may need to adjust the parallelization settings in the DMC. This could involve disabling parallel processing for the specific migration task that is causing the error.
  
  
  Consult Documentation: Refer to the SAP documentation for the Data Migration Cockpit or the specific migration tool you are using. There may be additional guidelines or best practices for handling key fields and parallelization.
  
  
  Test the Changes: After making the necessary adjustments, run a test migration to ensure that the error is resolved and that the data is processed correctly.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or fixes related to this error message.
  Data Types in SAP: Familiarize yourself with the different data types in SAP and their implications for data processing and migration.
  Performance Considerations: Understand the performance implications of parallel processing and how it can be optimized in your specific use case.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or consulting with an SAP expert for further assistance.