© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022
R. S. SubrahmanyamSAP S/4HANA Conversionhttps://doi.org/10.1007/978-1-4842-8091-1_5

5. Preparation Phase (Preparations in SAP ECC System Before SUM) – Part 1

Ravi Surya Subrahmanyam1  
Hyderabad, India

When converting to SAP S/4HANA, the preparation activities are the key to the success of the project. If the preparation activities are incomplete, SUM verifies this during its run and throws error messages. If the error is severe (such as return code 12), SUM stops running in the first phase. If the severity is low (such as return code 8 or 7), SUM stops or sends a message during its third or fourth phase.

It is highly risky to ignore a warning or error ...

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