Using the following URI (notice the space between Network and L1-3)

http://<NBI_server>:8080/nbi/api/v1/serviceSpecification?category=Network L1-3

or using the %20 instead of space:

http://<NBI_server>:8080/nbi/api/v1/serviceSpecification?category=Network%20[L1-3|http://%3Cnbi_server%3E:8080/nbi/api/v1/serviceSpecification?distributionStatus=DISTRIBUTED&category=Network%20L1-3]

always returns 404, even though services under that category exist.

I have confirmed a query to SDC usign the same criteria works :

http://\sdc_ip:30205/sdc/v1/catalog/services?category=Network L1-3

or

http://\sdc_ip:30205/sdc/v1/catalog/services?category=Network%20L1-3