Message type: E = Error
Message class:  CNV_PE_CHECK - Check Framework messages for posting engine 
Message number: 343
Message text: Field transformation is defined for field &1 with unspecified link
Field transformation is defined for a data field &V1&. Parameter link
exists for the field, however its type is <ZH>not </>specified.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Specify link type of the corresponding link.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_PE_CHECK343 indicates that there is a field transformation defined for a specific field (denoted as &1 in the error message) that does not have a specified link. This typically occurs in the context of data migration or transformation processes, particularly when using SAP's data migration tools or the SAP S/4HANA Migration Cockpit.
Cause: Unspecified Link: The error arises when a transformation rule is set up for a field, but the link to the source or target field is not properly defined. This can happen if the mapping between the source and target fields is incomplete or incorrectly configured.
Configuration Issues: There may be issues in the configuration of the data migration project, such as missing or incorrect settings in the transformation rules. Data Model Changes: If there have been changes in the data model (e.g., changes in the structure of the source or target tables), it may lead to discrepancies
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