# 33102

## Description <a href="#not-found" id="not-found"></a>

Raised when a required parameter is missing from the request. The error object’s `detail` field indicates which parameter was not provided.

## Possible Causes <a href="#not-found-1" id="not-found-1"></a>

* When sending a Command, the Sim parameter was not specified.&#x20;
* When transferring a SIM to another account, you must either provide a new Rate Plan that exists in the target account or remove the current Rate Plan if the SIM is currently assigned to one.&#x20;
* A SIM in status ready cannot be transferred to another account..

## Possible Solutions <a href="#not-found-2" id="not-found-2"></a>

* When sending a command, ensure that the Sim parameter is provided.&#x20;
* When transferring a SIM to another account, ensure that a Rate Plan available in the target account is provided.&#x20;
* When transferring a SIM to another account, ensure that the SIM is not in the ready status.


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