ALTER TABLE service_deactivation_requests ADD COLUMN sim_number VARCHAR(16) DEFAULT NULL AFTER phone_number;
ALTER TABLE service_deactivation_requests CHANGE COLUMN phone_number phone_number VARCHAR(16) DEFAULT NULL;

ALTER TABLE roaming_data_requests ADD COLUMN sim_number VARCHAR(16) DEFAULT NULL AFTER phone_number;
ALTER TABLE roaming_data_requests CHANGE COLUMN phone_number phone_number VARCHAR(16) DEFAULT NULL;
