The phase of the governed action's lifecycle. 'purchase': initial commitment (create_media_buy, acquire_rights, activate_signal). 'modification': update to existing commitment. 'delivery': periodic delivery or usage reporting. Defaults to 'purchase' if omitted.
The phase of the governed action's lifecycle. 'purchase': initial commitment (create_media_buy, acquire_rights, activate_signal). 'modification': update to existing commitment. 'delivery': periodic delivery or usage reporting. Defaults to 'purchase' if omitted.