Refer to the exhibit.

The CSV import process for FortiManager model devices requires the fields ' Serial Number ' , ' Device Blueprint ' , and ' Name ' . These are the mandatory identifiers used to create model devices and apply the appropriate initial provisioning configuration. In the exhibit, the missing device-blueprint field and an empty name for one device prevent a complete import. Options A and B are therefore the required corrections. Metadata values for addresses or user-defined variables may be included as additional columns, but they are not universally mandatory to import a model device. Consequently, options C and D impose requirements that depend on a subsequent provisioning template, not the CSV import itself. The selected blueprint must also be compatible with the target hardware platform. When deploying large numbers of devices, administrators should ensure serial numbers are unique, device names are valid and blueprint assignments resolve to templates and packages within the correct ADOM. The definitive FortiManager 7.6 import specification lists precisely those three required CSV columns; it does not impose a blanket requirement for every metadata variable to contain a value at import time.