How To Fix CX713 - Internal error: Object type KMAT_NST not allowed as ROOT instance

SAP Error Message - Details

• Message type: E = Error

• Message class: CX - Nachrichten für Konfigurationsprozess

• Message number: 713

• Message text: Internal error: Object type KMAT_NST not allowed as ROOT instance

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CX713 - Internal error: Object type KMAT_NST not allowed as ROOT instance ?

  The SAP error message CX713 Internal error: Object type KMAT_NST not allowed as ROOT instance typically occurs in the context of SAP Variant Configuration (VC) when there is an issue with the configuration of a configurable material (KMAT) or its associated characteristics and dependencies.
  Cause:
  
  Incorrect Configuration: The error often arises when a configurable material (KMAT) is incorrectly set up in the system. This can happen if the material is not properly defined as a root instance in the configuration hierarchy.
  Hierarchy Issues: The error may indicate that the system is trying to treat a non-root instance (like a component or sub-assembly) as a root instance, which is not allowed.
  Master Data Issues: There may be inconsistencies or missing data in the master data related to the configurable material, such as characteristics, classes, or dependencies.
  Custom Code: If there are custom enhancements or modifications in the configuration logic, they might be causing the error.
  
  Solution:
  
  Check Material Configuration: Review the configuration of the KMAT material in the material master. Ensure that it is correctly defined as a configurable material and that all necessary characteristics and dependencies are properly assigned.
  Review Class and Characteristics: Ensure that the class assigned to the KMAT material is correctly set up and that all characteristics are defined and linked properly.
  Check Dependencies: If there are dependencies (e.g., constraints, selection conditions) associated with the KMAT, verify that they are correctly defined and do not reference non-existent or incorrect objects.
  Hierarchy Validation: Ensure that the configuration hierarchy is correctly structured, with the KMAT material as the root instance and all components or sub-assemblies correctly defined as child instances.
  Debugging: If the issue persists, consider debugging the configuration process to identify where the error is being triggered. This may involve checking the configuration logic in the ABAP code if custom enhancements are present.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  Related Information:
  
  SAP Documentation: Refer to the SAP Help Portal for documentation on Variant Configuration and the setup of configurable materials.
  Transaction Codes: Use transaction codes like CS01, CS02, and CS03 to manage BOMs and check the configuration of materials.
  Transaction Codes for Debugging: Use transaction SE80 or SE37 to analyze custom function modules or classes that may be involved in the configuration process.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the problem continues after following these steps, it may be beneficial to reach out to SAP support for further assistance.