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90102 SMS Receive Timeout is an error code specific to Mobile testing. Regardless of the configured test timeout (default 240 seconds), if the SMS message is not received in 120 seconds, this error will be seen.
Note: The test is set with a timeout of 240 seconds, but the maximum value to receive the SMS is 120 seconds, as it is displayed in the UI of the Dynatrace Recorder. Even if 240 seconds is set manually, the script will wait for a maximum of 120 seconds.