---
title: "IFRS 17 CSM Roll-Forward Validator"
method: POST
path: "/v1/tools/validate_ifrs17_csm_rollforward"
tags: ["TODO_TAGS_REVIEW", "TODO_AP2_EXPORT_REVIEW"]
---

# IFRS 17 CSM Roll-Forward Validator

`POST /v1/tools/validate_ifrs17_csm_rollforward`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/validate_ifrs17_csm_rollforward`
- Auth: none declared

Validate IFRS 17 Contractual Service Margin (CSM) roll-forward mechanics: opening CSM + new business + interest accretion + experience adjustments - coverage-unit release + FX adjustments = closing CSM. Flags onerous contracts when computed closing falls below zero (IFRS 17 para 47-50: no negative CSM; shortfall recognized as immediate loss component). NaN-safe numeric validation on all inputs. Feeds risk-adjustment checker (art-179). IFRS 17 para 44-50. Zero network, zero PII.

**Tool URL:** https://ainumbers.co/chaingraph/art-178-ifrs17-csm-rollforward-validator.html

## Request body

- object
  - `csm` unknown

## Response `200`

Successful tool execution result

- object
  - `closing_csm` integer
  - `csm_valid` boolean
  - `experience_adjustments` integer
  - `fx_adjustments` integer
  - `interest_accretion` integer
  - `loss_component` integer
  - `new_business_csm` integer
  - `onerous` boolean
  - `opening_csm` integer
  - `release_to_profit` integer

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)