How To Fix SADL_EXPOSURE021 - Exactly one reference element allowed for COUNT_DISTINCT

SADL_EXPOSURE021 - Overview

• Message type: E = Error

• Message class: SADL_EXPOSURE - Errors During Exposure Compilation

• Message number: 021

• Message text: Exactly one reference element allowed for COUNT_DISTINCT

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_EXPOSURE021 - Exactly one reference element allowed for COUNT_DISTINCT ?

  The SAP error message SADL_EXPOSURE021 indicates that there is an issue with the use of the COUNT_DISTINCT function in your SAP Data Access Layer (SADL) query. Specifically, this error occurs when the COUNT_DISTINCT function is applied to more than one reference element, which is not allowed.
  
  Cause:
  The COUNT_DISTINCT function is designed to count unique occurrences of a single reference element. If you attempt to use it with multiple reference elements, the system cannot determine which element to count, leading to this error.
  
  Solution:
  To resolve this error, you need to ensure that the COUNT_DISTINCT function is applied to only one reference element. Here are the steps you can take:
  
  
  Review Your Query: Check the query where the COUNT_DISTINCT function is being used. Identify the reference elements involved.
  
  
  Modify the Query: If you find that multiple reference elements are being used with COUNT_DISTINCT, modify the query to ensure that only one reference element is passed to