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Use a Multichannel flow to perform one controlled channel test.

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Before you begin

Set up your account, prepare a test contact with a number you control, and check your credits. You need an available SMS sender ID.
1

Create the flow

In Flows, create a Multichannel flow and give it a recognizable test name.
2

Configure the action

Add a supported SMS step, select an available sender ID, and write a short test message. The message is sent to the run’s contact phone number; the SMS step does not configure a separate recipient.
3

Save and review

Connect the intended path and save. Resolve any validation errors before testing.
4

Test the saved flow

Open Test and choose your test contact or verified number. Review the message recipient and sender. Confirm the destination and start the test.
5

Inspect the run

Check the resulting run timeline and the message on your test phone. Confirm that the intended step executed.

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Expected result

Your test phone receives the configured SMS when the send succeeds. The run records the automation path.

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Troubleshooting

Save changes before testing, supply all values the flow reads, and check the required channel resource and credits. Investigate the run’s failure details if the action does not complete. A test performs real channel activity and may consume credits. See build and test a flow for the complete testing process. Next: launch a campaign.