Setup metadata to use Vaccination App in a DHIS2 instance.
$ node src/cli.js generate --url='http://admin:district@localhost:8080' -i source-data.json -o metadata.json
This will generate metadata prepared for a specific DHIS2 instance, so objects will be re-used if existing (uses field name as key).
Once the metadata is generated, you can send it the same DHIS2 instance:
$ node src/cli.js post --url='http://admin:district@localhost:8080' -i metadata.json
Records will be created or updated as necessary. This command may be run many times, no duplicates should be created.