Occasionally (or perhaps often) you will start an enrolment before the parent has supplied CRN details.
In this instance you should start the enrolment as a CWA enrolment type anyway. At some future point the parent may eventually supply the (correct) CRN details and its time to Formalise the enrolment. The term is a hold over from CCMS but it fits the bill.
If all other details had been supplied correctly, when the enrolment was first created, this is a simple process.
To complete this task you must be an Admin.
The most common errors are Child details not found and Parent Details not found.
Make sure you have a legible copy of the letter from Department to the parent with the details on it to verify against.
The details recorded in SmartCentral, and submitted to DSS on the enrolment, must match exactly what Centrelink has on file.
If the error is Eligibility Details Not Found, Incorrect or Invalid, then the parent details you have been provided are not the details of the parent registered at Centrelink. Check the letter for the registered parent and add them.