# Mark a jurisdiction registered > The registrations.mark_registered operation: POST /api/v1/registrations/{id}/mark_registered in the REST API and the registrations_mark_registered tool in the MCP server. Records the registration the tax authority confirmed: its `registrationNumber`, the date it is `effectiveFrom` (YYYY-MM-DD, from the start of that day in the jurisdiction's time zone) and `proof` (at least one document of the confirmation: a file uploaded to the registration, as its `file_…` ID, or a reference). The registration becomes `registered`: consumer sales there are charged tax as registered (spec §10.1). For US states, nothing is collected before `effectiveFrom`. Tax collected while the registration was pending (`tax_pending_registration`) moves to `tax_payable` in the same transaction, per jurisdiction and currency (ledger kind `tax_transfer`, linked to the registration; spec §11.3). Works from `grace`, `blocked_b2c` (armed or not), `monitored`, `pre_registration` and `deregistered` (registering early is the point of pre-registration); not from `registered` or `not_applicable`. Compliance tier (spec §41.4): tax managers, owners and admins. If the organization's approval policy lists this operation, the call answers `approval_required` and runs once a second person approves it. People need a sign-in within the last 15 minutes (spec §3.1). Returns the registration. ## At a glance - **REST:** `POST /api/v1/registrations/{id}/mark_registered` - **MCP tool:** `registrations_mark_registered` - **Operation ID:** `registrations.mark_registered` - **Scope:** Legal entity - **Permission:** `registrations:write` - **Risk tier:** `compliance` - **Dry run:** Supported (send `Ownrecord-Dry-Run: true`) - **Idempotency:** `Idempotency-Key` required - **Modes:** Test and live - **Authentication:** API key with the `registrations:write` scope - **Fresh sign-in:** In the console, a sign-in within the last 15 minutes - **Since:** M3 ## Request ### Path parameters | Field | Type | Description | | ----- | ------ | ----------------------------------------------------------------------------------------- | | `id` | string | The registration (`regn_…`) or its regime's ID, e.g. `EU_OSS_UNION` or `US_SALES_TAX:TX`. | ### Body A JSON object (`Content-Type: application/json`): | Field | Type | Required | Description | | -------------------- | --------------- | -------- | --------------------------------------------------------------------------------------------------------------------------------- | | `registrationNumber` | string | Yes | The registration number the tax authority issued. | | `effectiveFrom` | string | Yes | The first day the registration is effective (YYYY-MM-DD), in the jurisdiction's time zone. | | `proof` | array of object | Yes | Proof: at least one document (uploaded `file_…` or a reference) of the submission receipt or the registration confirmation. | | `proof[].reference` | string | Yes | A document uploaded to this registration (`file_…`), or the authority's receipt or application number, or a link to the document. | | `proof[].label` | string | No | What the document is, e.g. `OSS registration confirmation`. | | `note` | string | No | Why, or anything the team should know; kept in the registration's history and the audit log. | ## Response `200 OK` with a JSON object: | Field | Type | Description | | ------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------- | ----------- | | `id` | `regn_…` ID | | | `object` | `"registration"` | | | `entityId` | `ent_…` ID | | | `livemode` | boolean | | | `regimeId` | string | | | `regimeName` | string or null | | | `jurisdictionIds` | array of string | | | `state` | one of `not_applicable`, `monitored`, `pre_registration`, `grace`, `registered`, `blocked_b2c`, `deregistered` | | | `stateReason` | one of 18 values, e.g. `home_country`, `below_threshold`, `zero_threshold` (all in the OpenAPI document) | | | `stateChangedAt` | date-time | | | `armed` | boolean | | | `triggeredAt` | date-time or null | | | `deadlineAt` | date-time or null | | | `autoBlockAt` | date-time or null | | | `applicationSubmittedAt` | date-time or null | | | `escalationLevel` | integer (0 to 3) | | | `registrationNumber` | string or null | | | `effectiveFrom` | date-time or null | | | `registeredAt` | date-time or null | | | `prerequisitesDone` | boolean | | | `prerequisitesProgress` | object | | | `prerequisitesProgress.done` | integer | | | `prerequisitesProgress.total` | integer | | | `threshold` | object or null | | | `timeZones` | array of string | | | `createdAt` | date-time | | | `updatedAt` | date-time | | | `prerequisites` | array of object | | | `prerequisites[].code` | string | | | `prerequisites[].description` | string or null | | | `prerequisites[].leadTimeDays` | integer or null | | | `prerequisites[].status` | one of `todo`, `in_progress`, `done` | | | `prerequisites[].doneAt` | date-time or null | | | `prerequisites[].notes` | string | | | `prerequisites[].owner` | string or null | | | `prerequisites[].attachments` | array of object | | | `prerequisites[].attachments[].kind` | one of `file`, `reference` | | | `prerequisites[].attachments[].ref` | string | | | `prerequisites[].attachments[].label` | string or null | | | `prerequisites[].attachments[].addedAt` | date-time | | | `prerequisites[].attachments[].addedBy` | string | | | `prerequisites[].updatedAt` | date-time or null | | | `prerequisites[].updatedBy` | string or null | | | `evidenceFiles` | array of object | | | `evidenceFiles[].kind` | one of `file`, `reference` | | | `evidenceFiles[].ref` | string | | | `evidenceFiles[].label` | string or null | | | `evidenceFiles[].addedAt` | date-time | | | `evidenceFiles[].addedBy` | string | | | `history` | array of object | | | `history[].from` | one of `not_applicable`, `monitored`, `pre_registration`, `grace`, `registered`, `blocked_b2c`, `deregistered` or null | | | `history[].to` | one of `not_applicable`, `monitored`, `pre_registration`, `grace`, `registered`, `blocked_b2c`, `deregistered` | | | `history[].at` | date-time | | | `history[].by` | string | | | `history[].reason` | one of 18 values, e.g. `home_country`, `below_threshold`, `zero_threshold` (all in the OpenAPI document) | | | `history[].note` | string or null | | | `counters` | array of object | | | `counters[].windowKey` | string | | | `counters[].amount` | money | | | `counters[].transactionCount` | integer | | | `counters[].lastEventAt` | date-time | | | `regime` | object or null | | | `playbooks` | array of object | | | `playbooks[].key` | string | | | `playbooks[].kind` | one of `registration`, `filing`, `deregistration`, `other` | | | `playbooks[].markdown` | string | | | `officialLinks` | array of object | | | `officialLinks[].label` | string | | | `officialLinks[].url` | string | | | `actions` | object | | | `actions.arm` | object | | | `actions.arm.allowed` | boolean | | | `actions.arm.code` | string or null | | | `actions.arm.message` | string or null | | | `actions.markApplicationSubmitted` | object | | | `actions.markApplicationSubmitted.allowed` | boolean | | | `actions.markApplicationSubmitted.code` | string or null | | | `actions.markApplicationSubmitted.message` | string or null | | | `actions.markRegistered` | object | | | `actions.markRegistered.allowed` | boolean | | | `actions.markRegistered.code` | string or null | | | `actions.markRegistered.message` | string or null | | | `actions.deregister` | object | | | `actions.deregister.allowed` | boolean | | | `actions.deregister.code` | string or null | | | `actions.deregister.message` | string or null | | | `safetyBufferHours` | integer | | | `knowledgeCommit` | string | | ## Examples ### The OSS registration was confirmed ```http POST /api/v1/registrations/EU_OSS_UNION/mark_registered Authorization: Bearer or_test_… Idempotency-Key: 3f1c9a52-7d0e-4b8f-9a61-0c2d5e8b7f14 Content-Type: application/json { "registrationNumber": "HR12345678901", "effectiveFrom": "2026-11-01", "proof": [ { "reference": "https://docs.example.com/oss-confirmation.pdf", "label": "Confirmation letter" } ] } ``` Response (`200`): ```json { "id": "regn_01m4tx5nj8emwbyf7y9vcf47xk", "object": "registration", "entityId": "ent_01m4tx5nj8emwbyf7y9vcf47x2", "livemode": true, "regimeId": "EU_OSS_UNION", "regimeName": "EU One-Stop Shop, Union scheme", "jurisdictionIds": ["AT", "DE", "FR", "HR", "IT", "NL"], "state": "registered", "stateReason": "registered", "stateChangedAt": "2026-10-14T09:30:00.000Z", "armed": false, "triggeredAt": null, "deadlineAt": null, "autoBlockAt": null, "applicationSubmittedAt": null, "escalationLevel": 0, "registrationNumber": "HR12345678901", "effectiveFrom": "2026-10-31T23:00:00.000Z", "registeredAt": "2026-10-14T09:30:00.000Z", "prerequisitesDone": true, "prerequisitesProgress": { "done": 1, "total": 1 }, "threshold": { "status": "below", "window": "calendar_year_current_or_previous", "measure": "eu_cross_border_b2c", "currentWindow": "2026", "previousWindow": "2025", "threshold": { "amount": "10000000000", "currency": "EUR" }, "current": { "amount": "8500000000", "currency": "EUR" }, "previous": { "amount": "0", "currency": "EUR" }, "transactionThreshold": null, "currentTransactions": null, "previousTransactions": null, "worldwideTurnoverDeclared": null, "ratioPpm": "850000", "percent": 85, "detail": "8500.00 EUR counted (earlier window 0.00) against 10000.00 EUR" }, "timeZones": ["Europe/Zagreb"], "createdAt": "2026-10-13T12:00:00.000Z", "updatedAt": "2026-10-14T09:30:00.000Z", "prerequisites": [ { "code": "portal_access", "description": "Access to the tax portal of the member state of identification", "leadTimeDays": 7, "status": "done", "doneAt": "2026-10-13T12:00:00.000Z", "notes": "ePorezna access for the finance team", "owner": "Ana (finance)", "attachments": [], "updatedAt": "2026-10-13T12:00:00.000Z", "updatedBy": "usr_01m4tx5nj8emwbyf7y9vcf47xa" } ], "evidenceFiles": [ { "kind": "reference", "ref": "https://docs.example.com/oss-confirmation.pdf", "label": "Confirmation letter", "addedAt": "2026-10-14T09:30:00.000Z", "addedBy": "usr_01m4tx5nj8emwbyf7y9vcf47xa" } ], "history": [ { "from": null, "to": "monitored", "at": "2026-10-13T12:00:00.000Z", "by": "system", "reason": "below_threshold", "note": null }, { "from": "monitored", "to": "pre_registration", "at": "2026-10-13T12:00:00.000Z", "by": "system", "reason": "pre_registration_ratio_reached", "note": null } ], "counters": [ { "windowKey": "2026", "amount": { "amount": "8500000000", "currency": "EUR" }, "transactionCount": 412, "lastEventAt": "2026-10-13T12:00:00.000Z" } ], "regime": { "id": "EU_OSS_UNION", "name": "EU One-Stop Shop, Union scheme", "version": "3f2a9c41d07e88b1", "jurisdictionIds": ["AT", "DE", "FR", "HR", "IT", "NL"], "sellerEstablishment": "in_eu_other_ms", "customerType": "b2c", "threshold": { "amount": { "amount": "10000000000", "currency": "EUR" }, "measure": "eu_cross_border_b2c", "window": "calendar_year_current_or_previous", "transactionCount": null, "whatCounts": "B2C electronically supplied services to consumers in other member states, net of VAT.", "amountInclusive": false }, "zeroThreshold": false, "grace": { "rule": "nth_day_of_following_month", "days": null, "nthDay": 10 }, "collectBeforeRegistration": true, "b2bReverseChargeNoRegistration": true, "b2bChargeWhenRegistered": false, "requiresFiscalRepresentative": false, "requiresLocalAgent": false, "securityDeposit": null, "registration": { "method": "online", "portalUrl": "https://e-porezna.porezna-uprava.hr", "identityRequirements": null, "typicalProcessingDays": 7 }, "status": "verified", "unverified": false, "fixture": false, "validFrom": "2021-07-01", "validTo": null }, "playbooks": [ { "key": "EU/playbooks/EU_OSS_UNION-registration.md", "kind": "registration", "markdown": "# Registering for the Union OSS\n\n1. Sign in to the portal of your member state …" } ], "officialLinks": [ { "label": "EU One-Stop Shop, Union scheme: registration portal", "url": "https://e-porezna.porezna-uprava.hr" } ], "actions": { "arm": { "allowed": false, "code": "registration_transition_invalid", "message": "EU_OSS_UNION is registered, so \"arm\" isn't possible." }, "markApplicationSubmitted": { "allowed": false, "code": "registration_transition_invalid", "message": "EU_OSS_UNION is registered, so \"application_submitted\" isn't possible." }, "markRegistered": { "allowed": false, "code": "registration_transition_invalid", "message": "EU_OSS_UNION is registered, so \"mark_registered\" isn't possible." }, "deregister": { "allowed": true, "code": null, "message": null } }, "safetyBufferHours": 72, "knowledgeCommit": "1c14b2ec912aca347dd518b2044096f3b5d8eef1" } ``` ## Errors | Code | HTTP status | When | What to do | | ------------------------------------------------------------------------------------------------------------------ | ----------- | --------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [`registration_transition_invalid`](https://ownrecord.io/docs/reference/errors.md#registration_transition_invalid) | 409 | The registration is `registered` or `not_applicable` (`details.allowed_from`). | Check the registration's state (`details.state`): `details.allowed_from` lists the states the action needs. Reload the registration and try the action that fits its state. | | [`registration_details_invalid`](https://ownrecord.io/docs/reference/errors.md#registration_details_invalid) | 400 | The number, the effective date or the proof is missing (`param` names it). | Fill in the field named in `param`: the registration number, the date it is effective from, or at least one proof file. | | [`fresh_auth_required`](https://ownrecord.io/docs/reference/errors.md#fresh_auth_required) | 403 | Your last sign-in is older than 15 minutes. | Sign in again, then repeat the action within 15 minutes. | | [`validation_failed`](https://ownrecord.io/docs/reference/errors.md#validation_failed) | 400 | A field is malformed, or a `file_…` proof isn't a document of this registration (`param`: `proof.0.reference`). | Fix the fields listed in `details.issues` and send the request again. | | [`resource_not_found`](https://ownrecord.io/docs/reference/errors.md#resource_not_found) | 404 | This entity has no such registration in this mode. | Check the ID and that your credentials are scoped to the right organization, entity, brand and mode. | | [`jurisdiction_blocked`](https://ownrecord.io/docs/reference/errors.md#jurisdiction_blocked) | 422 | The tax knowledge no longer has a usable regime for this registration, so it can't change now. | This jurisdiction isn't covered by usable tax knowledge for this seller. Contact support if you need to sell there. | | [`approval_required`](https://ownrecord.io/docs/reference/errors.md#approval_required) | 202 | The organization's approval policy needs a second person for this action; nothing changed yet. | Nothing ran yet. An approver reviews `approval.summary` and the dry-run result in the console (`approval.approveUrl`). Poll `GET /approvals/{id}` or watch for the `approval.resolved` event; sending the same request again with the same Idempotency-Key returns the same approval. | | [`approval_rejected`](https://ownrecord.io/docs/reference/errors.md#approval_rejected) | 409 | The same request was sent again after it was rejected. | Read the reason in `details.approval.rejection`. To try again, send a new request with a new Idempotency-Key. | | [`approval_expired`](https://ownrecord.io/docs/reference/errors.md#approval_expired) | 409 | The same request was sent again after its approval request expired. | Send the request again with a new Idempotency-Key to create a new approval request. Requests expire after 72 hours. | | [`stale_approval`](https://ownrecord.io/docs/reference/errors.md#stale_approval) | 409 | The approved request could no longer run as requested. | Check the current state (`details.approval.failure` says what failed), then send a new request with a new Idempotency-Key. | | [`idempotency_key_reused`](https://ownrecord.io/docs/reference/errors.md#idempotency_key_reused) | 409 | The idempotency key was used before with another input. | Use a new Idempotency-Key for a different request, or resend the original request unchanged. | | [`livemode_not_allowed`](https://ownrecord.io/docs/reference/errors.md#livemode_not_allowed) | 403 | You have no live-mode access, so you can't change live registrations. | Use test mode, or credentials for the target's mode. Developers need live access granted by an organization owner or admin. | | [`scope_required`](https://ownrecord.io/docs/reference/errors.md#scope_required) | 400 | The request names no legal entity (an org key without `Ownrecord-Entity`). | Call the operation with credentials or a target at its level: an organization, a legal entity, a brand or the platform (`details.required_scope`). | | [`permission_denied`](https://ownrecord.io/docs/reference/errors.md#permission_denied) | 403 | You can't change this entity's registrations (tax managers, owners and admins can). | Ask an organization owner or admin for a role or scope that allows this action. | | [`version_conflict`](https://ownrecord.io/docs/reference/errors.md#version_conflict) | 409 | The registration changed at the same moment (a sale or the deadline job); reload and retry. | Fetch the object again and retry the change. | It can also return these [common errors](https://ownrecord.io/docs/reference.md#common-errors): [`api_version_unsupported`](https://ownrecord.io/docs/reference/errors.md#api_version_unsupported), [`invalid_json`](https://ownrecord.io/docs/reference/errors.md#invalid_json), [`unsupported_media_type`](https://ownrecord.io/docs/reference/errors.md#unsupported_media_type), [`authentication_required`](https://ownrecord.io/docs/reference/errors.md#authentication_required), [`api_key_invalid`](https://ownrecord.io/docs/reference/errors.md#api_key_invalid), [`idempotency_key_required`](https://ownrecord.io/docs/reference/errors.md#idempotency_key_required), [`idempotency_in_progress`](https://ownrecord.io/docs/reference/errors.md#idempotency_in_progress), [`approval_policy_denied`](https://ownrecord.io/docs/reference/errors.md#approval_policy_denied), [`rate_limited`](https://ownrecord.io/docs/reference/errors.md#rate_limited), [`internal_error`](https://ownrecord.io/docs/reference/errors.md#internal_error).