Several validations have been built into the MARC Editor that will help us enter metadata correctly according to our rules.
The validations tell us whether the indicators and subfields as well as some of their values are compliant. Any issues are flagged in red upon entry (or in the case of older records upon opening the record).
Corrections have to be made before a record can be saved. (This does not apply to records that were imported from Horizon - errors should be corrected if possible, but the record can be saved without corrections.)
Currently, we have no validation for MARC fields, but if you enter a field that is not defined in the system, it won't add any default subfields.
On the contrary, when you have a valid field, the corresponding subfields appear automatically. In this example below, the subfields a, b, and c appear when you enter the 999 field.
