Dual-write Case Study - Avoiding Conflicts:
"In a dual-write integration between D365 F&O and a CRM system (Dataverse), both systems can create customer records. How would you configure or design the numbering so that both F&O and CRM can generate customer IDs without producing duplicates or errors? Describe at least two possible strategies and their implications."
Interviewer guidance: The candidate should mention that F&O and Dataverse autonumber sequences aren't inherently synchronized, so they must plan to avoid overlap. The two main strategies: (a) Segregated formats (e.g. prefixing F&O-generated customers with one pattern and CRM with another, like "F1000" vs "C1000" series), or (b) Split numeric ranges (assign each system a sub-range). They might also indicate an alternative: restricting creation to one system only (so only one generates numbers). The answer should address the pros/cons (e.g., prefix approach makes source obvious; range approach requires ensuring no one exceeds their range; single-source creation simplifies numbering but reduces flexibility).