Hello,
In the S/4 HANA upgrade guides,it is said to perform SI checks & Custom code migration too. These steps are done in S/4 HANA conversion.
Why is SI check or Custom Code migration required in S/4 HANA upgrade? We don't do them in ECC upgrades.
In what phase does SUM actually perform the SI checks ?
1 Answer
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Best AnswerPosted on Jul 31, 2020 at 06:03 AM
"Why is SI check or Custom Code migration required in S/4 HANA upgrade? "
SI check performs two things. Relevance check to determine the SI relevant for the system for assessing the functional and technical impact of the upgrade/conversion. Consistency check to evaluates the issues to be solved on the relevant items before upgrade/conversion.
SAP keeps updating SI catalog (uploaded in report /SDF/RC_START_CHECK before execution), so the check is required even in case of upgrades. (It's not relevant for FPS updates within same release of S/4 HANA.)
Custom code analysis/migration is not a mandatory thing in S/4 HANA upgrades but is a continous process to keep the codes in compliance with the upgraded version.
"In what phase does SUM actually perform the SI checks ? "
SUM performs this check twice (though with different job names RUN_S4H_SIF_CHECK_INIT and RUN_S4H_SIF_CHECK_EXEC. (I have recently performed S/4 HANA 1709 to 1909 upgrades, hence able to share the screenshots).
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