The question is: suggest a possible cause for the discrepancies noted for the activities resulting from data quality and operation between two different branches in two different cities.

For right now, I have a summary of the idea:

Differences in service between branches

• Different customer-dependent service levels between branches (e.g. corporate rate vs standard rate accounts)
• A different method of delivering the service between branches (e.g. additional value-add services)
• Technology differences (e.g. software, hardware) that affect the transaction time between branches
• The different workflow between branches affecting transaction rates (e.g. staffing levels, scheduling, etc.)

Could anyone can help me to get more detailed explanations for those thoughts?