# UpdatePreviousContactParticipantState
UpdatePreviousContactParticipantState

This action is primarily used to prevent previous participants on the contact from observing the contact. Common use cases are disconnecting the agent that initiates a transfer when they transfer a contact to a secure destination, or putting the agent on hold when transferring to a quick connect that securely gathers customer input such as credit card numbers. 

## Parameter object


```
{
    "PreviousContactParticipantState": One of ["AgentOnHold", "CustomerOnHold", "OffHold"], which are only supported for voice contacts. 
}
```

## Execution results and conditions


None.

## Errors

+ NoMatchingError - if no other Error matches.

## Restrictions


This action is supported only in inbound contact flows and transfer flows. 

## Corresponding block in the UI


[Hold customer or agent](https://docs.aws.amazon.com/connect/latest/adminguide/hold-customer-agent.html)