With SAP S/4HANA 1709 the Simplification Item Check (SI Check) replaces the pre-checks available with earlier SAP S/4HANA releases. The SI Check identifies all simplification items relevant for the current system. To ensure that the system is in a consistent state, they'll be called by the Software Update Manager tool.
Call transaction SNOTE and download SAP Note 2502552. Follow the instructions in this SAP Note. The procedure is described step by step.
Execute program /SDF/RC_START_CHECK. Select the target SAP S/4HANA version. In the Simplification Item List, choose Check Consistency for All.
Note
The program returns a list of relevant and irrelevant simplification items. Check every relevant simplification item for the impact that it will have on your conversion project.
Some simplification items have a consistency check. The consistency check identifies inconsistencies in the system that would be a problem during the Software Update Manager process. It also provides additional information on how to solve the problem. Some simplification items don't have a consistency check; nevertheless, they're relevant. This means that, from a technical perspective, a conversion of your system is possible without any action from you. However, you must investigate the impact.
Some of the error messages from the consistency check are intended for you to read and understand the information provided by the consistency check error, for example, the information might be about data loss incurred during the conversion process. These errors can only be processed by creating an exception for them, which is logged in the system. The errors are highlighted in the report in the column Exemption Possible, so that you can see which errors need an exemption.
For more information about how to use the SI Checks, see the user guide in SAP Note 2399707.
The SI Checks checks your system for data consistency (necessary for the conversion of existing data) and effects on the data after the conversion. The severity of the resulting messages indicates whether there are no inconsistencies, warnings you should look at, or inconsistencies you need to resolve. The results are provided as green, yellow, or red messages.
Controlling, General Ledger, and Asset Accounting pre-checks are included in the SI Check.
After you have technically converted your system to SAP S/4HANA Server, you have to migrate your migration-relevant customizing settings, as well as your General Ledger, Asset Accounting, Controlling, and Material Ledger data to the new data structure.
For more information about the conversion of Financial Accounting, see SAP Note 2332030.