How To Fix CU823 - Class type & cannot be used for model service specifications

SAP Error Message - Details

• Message type: E = Error

• Message class: CU - Variants / configuration messages

• Message number: 823

• Message text: Class type & cannot be used for model service specifications

What causes this issue?

This class type is not defined for variant configuration of
<DS:GLOS.3526C11EAFAB52B9E10000009B38F974>model service
specifications</>.
In Customizing for the classification system, you define whether a
class type can be used for variant configuration. The <ZH>Variant class
type</> indicator is not set for the class type you entered.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

In the standard system, model service specifications can be configured
using class type 301.
To check the class types for model service specifications, see
Customizing for the classification system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CU823 - Class type & cannot be used for model service specifications ?

  The SAP error message CU823 indicates that a specific class type cannot be used for model service specifications. This error typically arises in the context of SAP's classification system, particularly when dealing with class types that are not compatible with the operations you are trying to perform.
  Cause:
  The error can occur due to several reasons:
  
  Incompatible Class Type: The class type you are trying to use is not designed for the specific model service you are working with. For example, certain class types are reserved for specific purposes and cannot be used interchangeably.
  Configuration Issues: There may be configuration settings in the SAP system that restrict the use of certain class types for model service specifications.
  Missing Authorizations: The user may not have the necessary authorizations to use the specified class type in the context of model service specifications.
  
  Solution:
  To resolve the CU823 error, you can take the following steps:
  
  
  Check Class Type: Verify that the class type you are trying to use is appropriate for the model service specification. You can do this by checking the documentation or configuration settings related to class types in your SAP system.
  
  
  Use Compatible Class Type: If the class type is indeed incompatible, you will need to select a different class type that is allowed for the model service specifications you are working with.
  
  
  Review Configuration: Check the configuration settings in the SAP system to ensure that the class type is correctly set up for use in model service specifications. This may involve consulting with your SAP Basis or configuration team.
  
  
  Check Authorizations: Ensure that you have the necessary authorizations to use the class type in question. If not, you may need to request additional permissions from your SAP security team.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for more detailed information on class types and their usage in model service specifications.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on resolving it.
  
  
  Related Information:
  
  Class Types in SAP: Class types in SAP are used to categorize objects and can have different functionalities based on their configuration. Common class types include class type 001 (Material), class type 002 (Customer), etc.
  Model Service Specifications: These are used in various SAP modules to define how certain objects or services are modeled and interacted with in the system.
  SAP Community and Forums: Engaging with the SAP Community or forums can provide insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.