3752152 - Stuck in "Validation Completed with Warnings" status — unable to proceed to next steps in Migrate Your Data

After uploading XML/CSV file in the Migrate Your Data app, validation completes with the following status: "Validation Completed with Warnings" 

The following issues are then observed:

• The Mapping task is confirmed, but does not appear in the Monitoring section
• Subsequent steps — Prepare, Mapping, Simulation, Migration — are not enabled
• Data has not been transferred to the staging tables

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

• SAP S/4HANA
• SAP S/4HANA Cloud Public Edition

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