Reference, limits, and downloads

Quotas

Plan	Active companies	TTN invoices / month	Organization API keys
partner-connect-starter	10	500	1
partner-connect-business	50	5,000	2
partner-connect-max	Unlimited	Unlimited	5

The invoice quota is the Connect subscription. It counts client-company invoices and invoices you create for your own tax ID.

Common errors

Code	HTTP	What to do
CONNECT_PLAN_REQUIRED	403	The account is not a Connect plan.
NOT_ALLOWED	403	Owner or manager role required.
NOT_A_PARTNER	400	Switch back to the partner organization, not a child company.
TAX_ID_EXISTS	409	Link the account listed in organizations.
ALREADY_LINKED	409	The company is already in the portfolio.
NOT_LINKABLE	409	Read reason: own_child, managed_elsewhere, or partner_or_cabinet.
CONNECT_ORG_LIMIT	409	Company limit reached.
USE_DETACH_OTP	409	A linked account is stopped from the owner's account.
TAX_ID_LOCKED	409	The tax ID can no longer change. reason is sandbox or ttn_submitted. Read taxIdLocked on GET.
INVOICING_SUSPENDED	409	The company is paused. Call POST .../resume before invoicing.
REQUEST_EXPIRED	400	The request is older than 7 days. Send a new one.

What this collection does not include

The Connect collection covers companies and linking. The invoice, SEAL signature, and TTN submission are in the Partner API collection: the same clientId, an org-scoped token on the client company, then sign-and-send.

Download

• 📦 Connect Postman collection (JSON) — manager session, companies, linking. Ready to import into Postman.
• 📦 Partner API Postman collection (JSON) — invoice, signature, and TTN submission for a client company.

Also available from your dashboard

Partner space → API credentials → Connect guide downloads the same Connect collection. The API guide tab downloads the invoicing collection.