---
page_type: error
code: 54208
message: "54208: Map Item already exists"
level: ERROR
product: Sync
---

## Error - 54208

### Sync: Map Item already exists

A Map Item with given key already exists in the Map.

#### Possible Causes

- Another Item with the matching Key already exists in this Sync Map, causing a conflict.
- The provided Key parameter is not set correctly.
- Your original Map Item creation request has been sent more than once due to a retrier error.

#### Possible Solutions

- Confirm a valid Key parameter is being passed in request, matching your expectation.
- Delete a previous Map Item with the matching Key if you no longer need it.
- Pick a different Key. If your items should be unique, consider using a UUID.