Message type: E = Error
Message class:  CNV_PE - General messages for posting engine 
Message number: 622
Message text: Parameter &1 has TTYP as parent and is not allowed in KB
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The SAP error message CNV_PE622 indicates that there is an issue with a parameter in the context of a conversion or migration process, specifically related to the use of a parameter that has a certain type (TTYP) as its parent, which is not allowed in the Knowledge Base (KB).
Cause: Parameter Type Restriction: The error suggests that the parameter you are trying to use is of a type that is not permitted in the context of the operation you are performing. In this case, the parameter has a parent type of TTYP, which is restricted in the Knowledge Base.
Configuration Issues: There may be a misconfiguration in the migration or conversion settings that leads to the use of an invalid parameter type. Data Model Issues: The data model being used may not support the parameter type in question, leading to this error during the conversion process.
Solution: Check Parameter Configuration: Review the configuration of the parameters
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