---
title: "Adds a single piece of transactional data to a contact."
method: POST
path: "/v2/contacts/transactional-data/{collectionName}"
tags: ["ApiContact"]
---

# Adds a single piece of transactional data to a contact.

`POST /v2/contacts/transactional-data/{collectionName}`

## Path parameters

- `collectionName` string, required

## Request body

- ApiTransactionalData
  - `key` string, nullable
  - `contactIdentifier` string, nullable
  - `json` string, nullable

## Response `201`

- ApiTransactionalData
  - `key` string, nullable
  - `contactIdentifier` string, nullable
  - `json` string, nullable

---

[API](https://skmtc.net/dotdigital/apis/apiconnector-com.md) · [All operations](https://skmtc.net/dotdigital/apis/apiconnector-com/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/dotdigital/apiconnector-com/revisions/109c0537cf77/schema)