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

RSDME856 - Overview

• 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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RSDME856 - Details

• 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