# SERIES_INCOMPATIBLE_DOC_TYPE

Series '‹value›' does not accept documents of type ‹value›: each series numbers only its own type. Choose a series of that type.

<Callout type="info">
**Category:** [Account settings](/errors/category/configuracion)
</Callout>

| | |
|---|---|
| HTTP status | `422` Unprocessable Content |
| Retry | After fixing the cause |

## When it happens

The series and the invoice's type do not match: a series numbers only documents of its own type. The `series_id` you sent belongs to a series of another document type, for example a proforma series for a standard invoice or a standard series for a corrective one, or it is an `UNASSIGNED` series, which numbers no type; or a draft whose `type` or `series_id` changed no longer fits. `error.details.expected_document_type` says which type was needed. It is checked when the invoice is created or edited, again when a draft is issued, and when a recurring invoice template changes its `invoice_type` or `series_id`.

## How to fix it

Send the id of a series of the right type, or omit `series_id` to use the company's default series for that type. To keep using an `UNASSIGNED` series, give it a type.

## Retry

Not as is: the same request fails the same way. Fix the cause described above, then send the request again, under a new `Idempotency-Key` if the body changed.

## Returned by

The operations where this code is most likely. The list is not exhaustive.

- [`POST /v1/companies/{company_id}/invoices`](/invoices/createCompanyInvoice)
- [`POST /v1/companies/{company_id}/invoices/{invoice_id}/corrective`](/invoices/createCompanyCorrectiveInvoice)
- [`PATCH /v1/companies/{company_id}/invoices/{invoice_id}`](/invoices/patchCompanyInvoice)
- [`POST /v1/companies/{company_id}/invoices/{invoice_id}/issue`](/invoices/issueCompanyInvoice)
- [`PATCH /v1/companies/{company_id}/recurring-invoices/{recurring_invoice_id}`](/recurring-invoices/patchCompanyRecurringInvoice)

## Rules that cite this code

- [NUM-005 · Simplified invoices are numbered in their own series](/rules/numbering#num-005)
- [NUM-006 · Corrective invoices are numbered in their own series](/rules/numbering#num-006)

## Example response

When this error occurs, the API answers `422` Unprocessable Content with a JSON body of this shape:

```json
{
  "type": "https://docs.beel.es/errors/SERIES_INCOMPATIBLE_DOC_TYPE",
  "title": "SERIES_INCOMPATIBLE_DOC_TYPE",
  "detail": "Series '‹value›' does not accept documents of type ‹value›: each series numbers only its own type. Choose a series of that type.",
  "instance": "/v1/<resource>",
  "errors": [],
  "success": false,
  "error": {
    "code": "SERIES_INCOMPATIBLE_DOC_TYPE",
    "message": "Series '‹value›' does not accept documents of type ‹value›: each series numbers only its own type. Choose a series of that type.",
    "details": {}
  },
  "meta": {
    "timestamp": "2026-05-21T10:00:00Z",
    "request_id": "4bf92f3577b34da6a3ce929d0e0e4736"
  }
}
```

The `type` URI is stable and always resolves to this page.

## Message

<Tabs items={["English", "Spanish", "Catalan"]}>
  <Tab value="English">{"Series '‹value›' does not accept documents of type ‹value›: each series numbers only its own type. Choose a series of that type."}</Tab>
  <Tab value="Spanish">{"La serie '‹value›' no admite documentos de tipo ‹value›: cada serie numera solo su tipo. Elige una serie de ese tipo."}</Tab>
  <Tab value="Catalan">{"La sèrie '‹value›' no admet documents de tipus ‹value›: cada sèrie numera només el seu tipus. Tria una sèrie d'aquest tipus."}</Tab>
</Tabs>

Send the request with `Accept-Language: <es|en|ca>` to receive the message in your preferred language.

> Placeholders like `‹value›` are filled in at runtime with the actual values of your request.

## Other errors in this category

<div className="grid grid-cols-2 gap-3 not-prose">
  <Card title="DEFAULT_CANNOT_BE_UNMARKED" description="Cannot unmark the default series. Set another series as default first" href="/errors/DEFAULT_CANNOT_BE_UNMARKED" />
  <Card title="DEFAULT_CANNOT_DEACTIVATE" description="Cannot deactivate the default series. Set another series as default first" href="/errors/DEFAULT_CANNOT_DEACTIVATE" />
  <Card title="DEFAULT_CANNOT_DELETE" description="Cannot delete the default series. Set another series as default first" href="/errors/DEFAULT_CANNOT_DELETE" />
  <Card title="ENTITY_TYPE_INCONSISTENT_WITH_NIF" description="The entity type ‹value› does not match the NIF ‹value›: an individual is identified by a DNI or NIE, and a company or entity by a NIF that starts with a legal-form letter" href="/errors/ENTITY_TYPE_INCONSISTENT_WITH_NIF" />
  <Card title="FISCAL_IDENTITY_LIVE_ONLY" description="This company is live. In Test mode you can only change how the invoice looks (logo, colour, template, languages and additional information). Fiscal details are edited in Live mode" href="/errors/FISCAL_IDENTITY_LIVE_ONLY" />
</div>

## Keep exploring

<div className="grid grid-cols-2 gap-3 not-prose">
  <Card title="All Account settings errors" description="Every code in this category in one table." href="/errors/category/configuracion" />
  <Card title="Error reference home" description="Browse every category or jump to the handling guide." href="/errors" />
</div>

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Full OpenAPI spec: https://docs.beel.es/api/openapi