How To Fix R-348 - Class reference cannot be in the uppermost extended cat. of prim. trans.

R-348 - Overview

• Message type: E = Error

• Message class: R- -

• Message number: 348

• Message text: Class reference cannot be in the uppermost extended cat. of prim. trans.

Self-Explanatory Message

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R-348 - Details

• The SAP error message R-348, which states "Class reference cannot be in the uppermost extended category of primary transaction," typically occurs in the context of SAP's classification system, particularly when dealing with classification and categorization of materials or objects in the system.
  
  Cause:
  This error usually arises when there is an attempt to assign a class reference to a classification that is not allowed due to the hierarchical structure of the classification system. Specifically, it indicates that the class reference you are trying to use is positioned in a way that violates the rules of the classification hierarchy. The "uppermost extended category" refers to a level in the classification hierarchy that is not permitted for certain types of class references.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Class Hierarchy: Review the classification hierarchy to ensure that the class reference you are trying to use is appropriate for the category you