Deleting a line item using ExternalObjectId

Developer Support APIs & Integrations
7

Thanks. Now I can get a deal with its corresponding ExternalObjectId but when I try to get line items associated with a deal through the CRM Associations API https://api.hubapi.com/crm-associations/v1/associations/dealId/HUBSPOT_DEFINED/19

I’m getting this response: “Error 405 Method Not Allowed”

Am I missing something?

Thanks!