Master / Transaction data Dump / Validation before DMO / SUM update

Dear All,

A quick question, we are migrating to S4HANA 1909.

We have completed the SI - simplification check analysis and cleared all errors in Sandbox ECC system (Production Copy).

We will start DMO / SUM update, before start this phase,

We would like to know what data dumps that we need to take from SAP from functional perspective.

For Example: for FICO. what data dumps that I need to extract from this Sandbox ECC system before SUM-DMO so that I will compare that data after SUM-DMO update.

Thanks and Regards,

Udaykumar P.P.