Message type: E = Error
Message class: CM_MDG_BS_CLF_GEN - Classification Message Class
Message number: 029
Message text: Class type &1 excluded; class type does not support change number
You entered a change number, but class assignment or valuation for this
class type is not allowed to be changed with a change number. See
customizing for material class types.
The class type is excluded from display and maintenance.
To display or maintain this classtype leave the transaction and open
classification again without entering a change number.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
CM_MDG_BS_CLF_GEN029
- Class type &1 excluded; class type does not support change number ?The SAP error message CM_MDG_BS_CLF_GEN029 indicates that a specific class type is excluded from using change numbers in the context of Master Data Governance (MDG). This typically occurs when you are trying to create or modify a class instance that is associated with a class type that does not support change numbers.
Cause: Class Type Configuration: The class type you are working with is configured in such a way that it does not support change numbers. This is often a result of settings in the class type configuration in the SAP system. Change Number Settings: The change number functionality may not be enabled for the specific class type in the system settings. MDG Configuration: The Master Data Governance configuration may not allow change numbers for certain types of master data.
Solution: Check Class Type Configuration: Go to transaction CL02 (Change Class) or CL03 (Display Class) and check the configuration of the class type in question. Ensure that the
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