Invalid relationship - when BLvl (Leader/07) is equal to a, then 773 must be present error in Digital Collection Gateway
- You get the validation error Invalid relationship - when BLvl (Leader/07) is equal to a, then 773 must be present when setting up a MARC map in Digital Collection Gateway.
- Digital Collection Gateway
This validation error means that the default MARC mapping identified the records in your repository as Monographic component parts and needs the details of what the item is a part of in the 773 tag. If this is correct and your items are part of a bigger whole, then you can select More > Show unmapped fields in order to expose the 773 tag so you can add information about the series.
There is more information on Monographic component parts and the 773 tag. You can also find more information about changing material formats.