---
title: "Year-over-year income-source delta (new / disappeared / matched) — account resolution."
method: GET
path: "/internal/api/clients/{client_id}/dms/document-flags/prior-year-delta"
tags: ["CLIENT", "Client Document Management", "DMS Document Flags"]
---

# Year-over-year income-source delta (new / disappeared / matched) — account resolution.

`GET /internal/api/clients/{client_id}/dms/document-flags/prior-year-delta`

## Request

- Base URL: `https://api.signalshq.io` (the document declares no server; this is the origin it was published from)
- URL: `https://api.signalshq.io/internal/api/clients/{client_id}/dms/document-flags/prior-year-delta`
- Auth: OAuth 2
  - Password
  - Token URL: `/auth/login`

## Path parameters

- `client_id` string, uuid, required: Client ID

## Query parameters

- `tax_year` integer, required
- `prior_year` integer, required

## Response `200`

Successful Response

- PriorYearDeltaResponse: Year-over-year income-source delta — a heuristic review aid (see ``confidence``).
  - `current_year` integer, required
  - `prior_year` integer, required
  - `new_sources` AccountSourceOut[], required
    - `account_key` string, nullable, required
    - `income_family` string, nullable, required
    - `display_payer` string, nullable, required
    - `document_ids` string[], required
  - `disappeared_sources` AccountSourceOut[], required
    - `account_key` string, nullable, required
    - `income_family` string, nullable, required
    - `display_payer` string, nullable, required
    - `document_ids` string[], required
  - `matched_sources` AccountSourceOut[], required
    - `account_key` string, nullable, required
    - `income_family` string, nullable, required
    - `display_payer` string, nullable, required
    - `document_ids` string[], required
  - `confidence` string, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/signalshq/apis/signals-api.md) - [All operations](https://skmtc.dev/signalshq/apis/signals-api/llms.txt) - [OpenAPI document](https://skmtc.dev/signalshq/apis/signals-api/revisions/2c22af3b5576?raw)