> ## Documentation Index
> Fetch the complete documentation index at: https://api.amlyze.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Communication Number

> Communication number unique identifier

Each request that is related to customer, account or operation object creation in the system is associated with request identifier called `communicationNumber`. Provided value **must be unique for each request and cannot be reused**. Trying to reuse already used value will result in error. This logic applies to both <Badge color="red">failed</Badge> and <Badge color="green">succeeded</Badge> requests.

<Tip>To expedite the resolution process, provide the `communicationNumber` when you contact us about a specific request.</Tip>