How exemption works in report /SDF/RC_START_CHECK?

[SAPSupport]

Hi Support,

what is the difference in the system conversion if we fix the SI-check error vs exempting. We understand how to fix this but the main focus of opening this incident is how exemption work and what would be the impact during/after the conversion knowing we do not use this functionality. 

Thanks,

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[SAPSupport · Accepted solution]

Dear Customer, 

Exemption is a method to help the customer skip the consistency check error in the SUM phase. Otherwise, SUM may be stopped during the SIC check phase, for example the condition described in KBA 3425038. The simplification item check only supports the exemption of an item when the consistency check return code is 7. 

For those consistency check errors that can be resolved before migration or update, it's highly recommended to resolve the error rather than use the exemption. However, as Note 2399707 stated, some simplification items only require the acknowledgment of the customer. You need only apply an exemption to the simplification item in such cases. In doing so, you acknowledge that you have read and understood the message. Once an item is exempt, it will no longer block the conversion to the corresponding target SAP S/4HANA product version. 

Best regards,
Vera Jiang