Retrieves the Payment specified by this unique identifier, optionally including nested data sets.
A Payment represents money sent from one company to another. A single payment may contain payments for one or more invoices; it is also possible for payments to be made in advance of an invoice, for example, as a deposit. The creator of the Payment is identified by the CustomerId field, and the recipient of the Payment is identified by the CompanyId field. Most Payments are uniquely identified both by a Lockstep Platform ID number and a customer ERP "key" that was generated by the system that originated the Payment. Payments that have not been fully applied have a nonzero UnappliedAmount value, which represents a deposit that has been paid and not yet applied to an Invoice.
To call this endpoint, you must have one of these roles: