How To Fix B1866 - Table parameter &1 already exists in the hierarchy

B1866 - Overview

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 866

• Message text: Table parameter &1 already exists in the hierarchy

Self-Explanatory Message

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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 B1866 - Table parameter &1 already exists in the hierarchy ?

  The SAP error message B1866, which states "Table parameter &1 already exists in the hierarchy," typically occurs in the context of Business Information Warehouse (BW) or BusinessObjects when you are trying to create or modify a hierarchy and a table parameter with the same name already exists.
  
  Cause:
  The error is caused by attempting to add a table parameter to a hierarchy that already contains a parameter with the same name. This can happen if:
  
  You are trying to create a new hierarchy node or level that has the same name as an existing one.
  There is a duplicate entry in the hierarchy definition.
  The hierarchy structure is not properly defined, leading to conflicts.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Hierarchy: 
  
  Review the existing hierarchy structure to identify if a parameter with the same name already exists. You can do this by navigating to the hierarchy in the SAP BW or