delete https://{youraccountname}.api-us1.com/api/3/customObjects/schemas/
Deleting a Schema Deletes all Associated Records
Deleting a schema also deletes all the Custom Object records that are associated with the schema!
Responses
Deleting a Schema Deletes all Associated Records
Deleting a schema also deletes all the Custom Object records that are associated with the schema!
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curl --request DELETE \
--url https://youraccountname.api-us1.com/api/3/customObjects/schemas/id \
--header 'accept: application/json'