How To Fix R8651 - DataSource with data type &1: key change not supported

R8651 - Overview

• Message type: E = Error

• Message class: R8 - Messages from the meta data generation

• Message number: 651

• Message text: DataSource with data type &1: key change not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message R8651 - DataSource with data type &1: key change not supported ?

  The SAP error message R8651 indicates that there is an issue with a DataSource that has a specific data type, where a key change is not supported. This typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when trying to replicate or load data from a source system into a DataSource that has a key structure that does not allow for changes.
  
  Cause:
  
  Key Change Not Supported: The error arises when there is an attempt to change the key fields of a DataSource that is already defined and in use. In SAP BW, certain DataSources are designed with fixed key fields, and any attempt to modify these fields can lead to inconsistencies in data loading and reporting.
  Data Type Issues: The error message specifies a data type (represented by &1), which indicates that the DataSource is of a type that does not support key changes. This could be due