How To Fix KG819 - Product hierarchy & has not been maintained

KG819 - Overview

• Message type: E = Error

• Message class: KG - CO-PA Planning

• Message number: 819

• Message text: Product hierarchy & has not been maintained

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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KG819 - Details

• The SAP error message KG819 indicates that the product hierarchy for a specific material or product has not been maintained in the system. This error typically arises in the context of pricing, sales, or inventory management processes where the product hierarchy is required for categorization or reporting purposes.
  
  Cause:
  
  Missing Product Hierarchy: The primary cause of this error is that the product hierarchy has not been defined for the material in question. The product hierarchy is essential for various functionalities, including pricing, reporting, and analysis.
  Incorrect Material Master Data: The material master record may not have the necessary data filled in, leading to this error.
  
  Configuration Issues: There may be issues in the configuration settings related to product hierarchies in the SAP system.
  
  
  Solution:
  To resolve the KG819 error, follow these steps:
  
  
  Maintain Product Hierarchy:
  
  Go to the transaction code MM02 (Change Material) or MM01 (Create Material).
  Enter the material number that is causing the error.
  Navigate to the appropriate