The National Code Field on the Course details window has been created for the Full Qualification National Code. If the course has been set up as a short course, then this field is not required.
For short courses we have allowed it to be used, if you want to enter the unit code but it is limited by the characters allowed for the Full Qualifications. The Program identifier (National Code) is used on the NAT000030 & NAT00120 for reporting and is restricted by 10 characters. If your Unit code is 10 or less characters then you are able to use this field.

Short Courses - Not Required

 

Full Qualification- National Code Field Mandatory (Limited to 10 Characters)