NDC mappings produce null outputs

[Weilin37]

I downloaded a list of NDC codes from the FDA website, and created a CSV file with column header "NDC" of the codes.

It looks like this:

NDC
0002-0800
0002-1200
0002-1210
0002-1433
0002-1434
0002-1436
0002-1445
0002-2236
0002-2377
0002-2980
0002-3115
0002-3182
0002-3227
0002-3228
0002-3229
0002-3230
0002-3231
0002-3235
0002-3238
0002-3239
0002-3240
0002-3250

I get an error saying that no data was mapped. Any ideas? See below:

Tallying atc5:
112470 (100%) rows have no atc5 value.
The original data contained 111009 NDCs:
0 (0%) were fully mapped to atc5.
111009 (100%) remain fully unmapped to atc5.

Tallying atc4:
112470 (100%) rows have no atc4 value.
The original data contained 111009 NDCs:
0 (0%) were fully mapped to atc4.
111009 (100%) remain fully unmapped to atc4.