Currently, Basic authentication is not available with the REST API provided by IM-Workflow.
It supports "Method that depends on the authentication status of the session linked to cookies" or "OAuth authentication".
By using the IM-Workflow API for script development for the JavaScript user-defined task of IM-LogicDesigner, it is possible to call the flow of IM-LogicDesigner with Basic authentication.
■intra-mart Accel Platform IM-LogicDesigner specifications
4.3. flow routing
Authentication by Authentication Method
https://document.intra-mart.jp/library/iap/public/im_logic/im_logic_specification/texts/function_specification/routing/index.html#routing-authentication
4.2. user definition task
JavaScript
https://document.intra-mart.jp/library/iap/public/im_logic/im_logic_specification/texts/function_specification/user_definition/javascript.html
■ (im-BizAPI for Script Development) IM-Workflow
https://api.intra-mart.jp/iap/apilist-ssjs/doc/im_workflow/index.html
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iAP/Accel Platform/2020 Summer or later
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FAQID:1215