Approves the selected issued Contractor Invoices and initiates a bank-transfer payment for
them on the company's behalf, as Remote would. The invoices become pending_payment and
carry a payment reference, so the payment summary and the pay-in details of a real payment
can be read back.

Preconditions:

• Run POST /v1/sandbox/companies/{company_id}/bypass-eligibility-checks first, so the
  legal entity has passed KYB.
• Every contractor on the selected invoices must hold a bank-account payout method, and
  every contractor in one request must use the same payout method.
• The company's legal entity must be able to pay in the invoice currency — its default
  currency, or one it holds an active virtual account for.
• When the contractors are paid on Remote's licensed rails, the user initiating the
  payment must have completed identity verification.

Calling it again for invoices that are already pending_payment returns the same payment,
creates nothing new and does not retry the pay-in. If pay_in_method stays not_selected
after initiation, Remote has not recorded the pay-in: initiate a fresh batch of invoices,
or contact Remote.

This endpoint is only available in Sandbox, otherwise it will respond with a 404. There is
no pay action on the production API: payments are initiated in Remote.

Authentication

This endpoint accepts any one of the following token types:

• Company-scoped access token (OAuth2AuthorizationCode) — obtained through the Authorization Code flow or the Refresh Token flow. See Authentication for partners.
• Customer API token (CustomerAPIToken) — generated by the customer on their Integration Settings page. See Authorization for customers.