Once you have received the SRTO notification back from the RTO, you will need to update the Ready Apprentice Signup record to reflect this.
After finding the Signup record, click on the Signup Actions arrow, then select SRTO Receive.
You will then need to confirm the date the SRTO was received (it will default to the current date), then click on Submit.
You will notice that the Status of the Signup has been updated accordingly.