Objective: create/update (upsert) via restAPI by providing externalID in url Scenario: A third party application updates a custom record via RestAPI via its the external ID. The RestAPI is working successfully ! except in one case only. When external ID includes a slash ('/') the integration doesnt work. e.g {{baseUrl}}/customrecord_xxx/eid:23-00001/Postman02 where 23-00001/Postman02 is my external ID. I tried encoding the slash and use %2F but still doesnt work and it is worse than before since my postman doesnt hit NetSuite server. Error: getaddrinfo ENOTFOUND www.eu3.netsuite.com Is that a technical limitation, do we have a solution or externalID should not contain '/' ? #CFG7DNCM9 #RestAPI

For rest API external ids you may only use 0-9 A-z . And -, anything else is a crapshoot and not supported