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Hi,
I know it's possible to start a business process with a file attached to form field using graphical user interface. Is it possible to do the same programmatically using Alfresco Process Services REST API?
It seems that POST /enterprise/process-instances (Start a process instance) only contains variables and values fields: https://activiti.alfresco.com/activiti-app/api-explorer.html#!/process-instances/startNewProcessInstanceUsingPOST
There's no direct API to initiate process instance with Attachments.
What you can do is first create the attachment in aps using content-api
Get the Content ID from the response and send the same in the start-process api with the fieldID same as your form's field id.
You can also attach field directly thttps://activiti.alfresco.com/activiti-app/api-explorer.html#!/content/createRelatedContentOnProcessInstanceUsingPOST_1o the process instance using-
