---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/54206#article
headline: "54206: Invalid Map Item data"
url: https://www.twilio.com/docs/api/errors/54206
inLanguage: en
dateModified: 2026-06-08T11:29:20.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 54206: Invalid Map Item data

Log Level: ERROR

## Description

Twilio returns this error when your request sends the `Data` parameter as `null` for a Sync Map Item operation that requires data. When you create a Map Item, include `data` in the request body as a JSON string or object that represents the item you want to store.

### Possible causes

* Your request to create a Map Item does not include the `Data` parameter.
* Your application passes `Data` as `null`.
* The value in `Data` is not a valid serialized UTF-8 JSON object.

### Possible solutions

* Include the `data` request body parameter when you create a Sync Map Item.
* Send a valid JSON object in `Data`. If you need a minimal value, send `{}`.
* If you use a Twilio helper library, pass `data` as an initialized object instead of `null`.
* Make sure the Map Item `data` value stays within the 16 KiB limit.

#### Additional resources

* [Sync MapItem Resource](/docs/sync/api/map-item-resource)
* [Map Resource](/docs/sync/api/map-resource)
* [Sync Quickstarts](/docs/sync/quickstart)