Im getting 403 forbidden error in postman when im trying to POST the data using the following API

https://intelligent-mapping-prod.run.aws-usw02-pr.ice.predix.io/v1/collections/transformers

Geojson data is a sfollows:-

{ "type" : "FeatureCollection", "features" : [{ "type" : "Feature", "properties" : {
"capacity" : "10", "type" : "U-Rack", "mount" : "Surface" }, "geometry" : { "type" : "Point", "coordinates" : [ -71.073283, 42.417500 ] } }] }