Supplier Onboarding Process Design

I need to design a supplier onboarding process. Our context:

Supplier types: [Direct, indirect, services]
New supplier volume: [How many new suppliers annually]
Current process: [Existing onboarding if any]
Pain points: [Delays, missing information, compliance gaps]
Compliance requirements: [Required certifications, insurance, etc.]
System requirements: [ERP, procurement system setup]
Stakeholders: [Who's involved in onboarding]
Timeline expectations: [Target onboarding duration]

Please design:
1. End-to-end onboarding workflow
2. Documentation requirements checklist
3. Compliance verification process
4. System setup procedures
5. Training and communication approach
6. Performance metrics
7. Continuous improvement process