Migrating Phone Numbers
A Migration Process refers to the necessary steps taken when moving a number from one WABA (WhatsApp Business Account) to another.
It is applicable in various scenarios, such as Migrating a number from one BSP (Business Solution Provider) to another, migrating from Classic signup to Embedded signup WABA, or making changes to payment settings like WABA currency.
These steps are only for numbers registered as WhatsApp Business API accounts. If you are not sure the number is registered as a WhatsApp Business API, try messaging it.
If the Call icon 
appears in the top right of the app, it means that this is a WhatsApp Business App account. If the Call icon is not available, it means that it is registered in the WhatsApp Business API.
Note: In some cases, the call icon may not appear correctly on the business accounts of the current desktop version of WhatsApp. If this occurs, you can verify whether the number is registered by checking the message that appears when starting the conversation.
If the message is similar to the one below, it means that the number is still registered on the WhatsApp App.
To determine whether a number is registered On-premise or on Cloud API, there are a few methods you can use. You can check directly in the 360dialog Hub (if the number is already registered with 360dialog). Another option is to start a new conversation with the number and check the message that appears when starting the conversation.
This is the standard message when starting a conversation with a WABA registered on the On-premise API:
This is the standard message when starting a conversation with a WABA registered on the Cloud API:
When migrating an account, there are the following possibilities:
If the current number is registered in On-premise API, once migrated, it will have Cloud hosting with 360dialog, unless your Partner is not enabled for Cloud API or if your Partner specifies a different hosting type during Integrated Onboarding.
In addition to migrations, there are other scenarios that may require adjustments to a WhatsApp Business Account (WABA) while maintaining the same phone number within the same WABA. These instances involve making Account changes, which are distinct from Migration processes.
Rather than transferring a phone number from one WABA to another, these changes focus on updating specific configurations or functionalities within the existing WABA. For instance, it could involve upgrading a number to a Multi-Connect Setup or moving the number from On-premise to Cloud API (vice versa).
When changing the settings of a WABA, there are the following possibilities
If you would like to change an existing number’s hosting type from 360dialog On-premise to 360dialog Cloud API please refer to this process.
To transfer management of an existing WhatsApp Business Account to a new partner, the Partner Change process must be initiated through the 360dialog Client Hub. See Partner Change Process.