How To Fix RSDME856 - Model &1 is already attached to BW DataSource &3

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDME -

• Message number: 856

• Message text: Model &1 is already attached to BW DataSource &3

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDME856 - Model &1 is already attached to BW DataSource &3 ?

  The SAP error message RSDME856 indicates that a specific model (in this case, &1) is already attached to a BW DataSource (in this case, &3). This typically occurs in the context of SAP BW (Business Warehouse) when you are trying to attach a model to a DataSource that is already linked to another model.
  Cause:
  
  Duplicate Attachment: The model you are trying to attach is already associated with the specified DataSource. In SAP BW, a DataSource can only be linked to one model at a time.
  Configuration Error: There may be a misconfiguration in the BW system where the model and DataSource relationships are not correctly defined.
  Development or Transport Issues: If you are working in a development environment and transporting objects, there may be inconsistencies between environments.
  
  Solution:
  
  Check Existing Attachments: Verify which model is currently attached to the DataSource. You can do this by navigating to the DataSource in the SAP BW modeling tools and checking its properties.
  Detach the Existing Model: If you need to attach a different model, you will first need to detach the existing model from the DataSource. This can usually be done in the DataSource settings.
  Use a Different DataSource: If the model you want to attach is already linked to a DataSource, consider using a different DataSource for your new model.
  Review Transport Requests: If this issue arises after a transport, ensure that all relevant objects have been transported correctly and that there are no inconsistencies.
  Consult Documentation: Refer to SAP documentation or help resources for specific steps on managing models and DataSources in your version of SAP BW.
  
  Related Information:
  
  SAP BW Modeling Tools: Familiarize yourself with the modeling tools in SAP BW, as they provide interfaces for managing DataSources and models.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to resolve the RSDME856 error and successfully manage your models and DataSources in SAP BW.