Get the issuing readiness of a company

Returns whether a company can issue its STANDARD invoice right now in the environment of the request, and the blockers that stop it otherwise. Readiness is a per-NIF property, evaluated independently for each company of the account.

• ready: true only when blockers is empty.
• Activation: issuing any fiscal document requires the company to be activated in the environment of that document, whether or not it goes to VeriFactu.
• VeriFactu chain: the AEAT census and signed representation are additionally demanded only when the company is under the VeriFactu regime in this environment — the same fact that decides, at issue time, whether its invoices are registered. A company with VeriFactu off is ready with a NIF, a default series and an activation, and the separate verifactu block reports the compliance chain independently.
• Not evaluated: the account's quota or subscription, and the payload of any particular invoice.