How To Fix MC821 - Technical layout & & and technical layout of proxy view & do not match

MC821 - Overview

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 821

• Message text: Technical layout & & and technical layout of proxy view & do not match

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MC821 - Technical layout & & and technical layout of proxy view & do not match ?

  The SAP error message MC821 typically indicates a mismatch between the technical layout of a data source and the technical layout of the corresponding proxy view in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence). This error can occur during data extraction or when trying to load data into a data target.
  
  Cause:
  
  Mismatch in Data Structure: The technical layout of the data source (e.g., InfoSource, DataSource) does not match the technical layout of the target (e.g., InfoProvider, DSO, or InfoCube). This can happen if there have been changes made to the data source or the target structure without corresponding updates to the other.
  Changes in Fields: If fields have been added, removed, or modified in either the data source or the target, it can lead to this error.
  Versioning Issues: If there are different versions of the data source or target being used, it can lead to inconsistencies.
  Transport Issues: