Setup Requirements:
Full Control Admin or Owner of Business Portfolio on Meta Business Suite.
The Business Portfolio has no restrictions.
Tip: To check your Account Overview, go to Business Support Home and select the right Business Portfolio to view.
Step-by-step Guide
Log in to iSlash AI Platform at https://app.islash.io/
Go to Settings.
Go to Channels and click "+" to create a new channel.
Under New Channel:
Name: Enter any name you like. This is for your internal reference only.
Timezone: Update the timezone according to your location.
Platform: Select "WhatsApp Official API (iSlash)".
Migration Channel: Tick to enable only if your previous provider is EMMA, 360dialog or Alibaba. For other providers, leave it unticked.
Click Save, then click "Continue with Facebook".
A Meta pop-up window will appear. Log in to your Facebook account if prompted, then click "Continue".
Under "Add your WhatsApp phone number":
Phone number: Select "Enter a new phone number", choose the country code and enter the number you want to migrate.
Choose how you would like to verify your number: Select either Text message or Phone call.
For migration, Meta will skip the verification code and go straight to the next step.Click "Next".
Meta will automatically detect the Business Portfolio linked to this number. Tick "I have confirmed that all integrations on this number support conversation routing", then click "Next".
On the "Review what you'll share with iSlash" screen, click "Confirm", then "Next", and then "Finish" to complete the steps in the Facebook pop-up.
Wait a moment while the system configures your account. The system will show "Success" when it's completed.
Set up conversation routing.
Go to Meta Business Suite > Accounts > WhatsApp accounts.
Click the WhatsApp account (phone number) you are migrating.
Click the "Conversation routing" tab, then click "Manage".
In the "Configure conversation routing" pop-up, under Message routing, change every item from your previous provider to "1Slash Limited":
Customer replies to click-to-WhatsApp ad
Customer sends a message
Calls with customers
Customer replies to a marketing message
Customer replies to a utility message
Under Thread control, set All conversations to "1Slash Limited".
Click "Apply", then click "Update" in the pop-up box to save.
Check again that every item under Message routing shows "1Slash Limited".
Why this matters: If any item is still assigned to your previous provider, those messages will go to the previous provider and will not appear in your iSlash chatroom.
Remove your previous provider from the Messaging account.
In Meta Business Suite, go to Accounts > Messaging accounts.
Select the Messaging account linked to this phone number.
Click the "Partners" tab.
If your previous provider appears, click "Manage" next to it, then click "Remove Access".
Remove your previous provider from the WhatsApp account.
Go to Accounts > WhatsApp accounts and select the phone number.
Click the "Partners" tab.
If your previous provider appears, click "Manage" next to it, then click "Remove Access".
When ending your contract with your previous provider, ask them to remove their access only. Do not let them delete or deregister the phone number, as this will also disconnect the number from iSlash.
Test message: Send a message to this number and reply to it.
Message Templates
Message templates from your previous provider will not be migrated to iSlash. Please recreate your message templates on iSlash AI Platform and submit them to Meta for review.
FAQ
Can I find the chat history from my previous WhatsApp API platform?
No, chat history won't be migrated from the previous platform.Some incoming messages show up in iSlash, but others don't. Why?
This usually means some conversation routing items are still assigned to your previous provider. Repeat Steps 13–14 and make sure every item under Message routing is set to "1Slash Limited".