How To Fix W+579 - Inclusion of ref. customers in transfer only possible for message type &1

W+579 - Overview

• Message type: E = Error

• Message class: W+ -

• Message number: 579

• Message text: Inclusion of ref. customers in transfer only possible for message type &1

Self-Explanatory Message

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W+579 - Details

• Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W+579 Inclusion of ref. customers in transfer only possible for message type &1
  
  
  Cause:
  This warning message occurs during the processing of customer master data or customer-related data transfer (e.g., in ALE/IDoc processing or customer master data distribution). It indicates that the inclusion of reference customers (i.e., customers referenced or linked to the main customer) in the data transfer is only allowed for a specific message type.
  In other words, the system is trying to include reference customer data in a transfer or distribution process, but the current message type being used does not support this inclusion. The message type parameter &1 specifies the allowed message type for such inclusion.
  
  Explanation:
  
  Reference customers are customers linked to a main customer, often used in scenarios like partner functions or hierarchical customer relationships.
  When distributing or transferring customer data (e.g., via ALE/IDocs), certain message types are designed