Company (payer) management

Use the following table to understand the tasks, use cases, endpoints, and requirements for managing companies (payers).


Task	Use case	Endpoint/Parameter	API Document	Requirement
Create a company	Register a business requesting W-series forms	`POST /w9/companies`	CreateCompany	Required
Update a company	Allow updating the company's contact and configuration info	`PUT /w9/companies/{id}`	UpdateCompany	Suggested
List companies	Display a list of companies for selection or filtering	`GET /w9/companies`	GetCompanies	Suggested
Retrieve a company by ID	Fetch full details of a specific company record	`GET /w9/companies/{id}`	GetCompany	Suggested