CORE_ATTACHMENT_LINK_MANAGE CORE Endpoint
  /rpc/core/?method=CORE_ATTACHMENT_LINK_MANAGE  
  Link an attachment to an object.  
  PARAMETERS TYPE NOTES
  DataReturn Text A comma delimited list of advanced search fields to be returned after a successful save
  Id numeric  
  Remove 1  
       
  Attachment Numeric Mandatory
  Notes Text (2000)  
  Object Numeric Mandatory
  ObjectContext Numeric Mandatory
  RETURN  
  id