Excel Mixed Data Entry & Validation

I’ll provide my current data-entry sheet along with batches of mixed information—text strings, numbers, and date/time values—that must be keyed in accurately and then rigorously checked. Your job is to populate every field, apply sensible validation rules (duplicate checks, format constraints, basic range logic), and hand back a clean workbook that’s ready for downstream analysis.

The workbook should open with no warnings, columns must retain their intended data types, and any discrepancies you find should be flagged on a separate tab with a brief note. When you return the file I will spot-check several records, so accuracy has to be 100 %. If this first round goes smoothly there’s more data waiting in the queue, so a quick turnaround and clear communication will be appreciated.