organisation in OpportunityType
branch_id is no longer a required parameter in the opportunity creation flow as per the new programme structure and hence we cannot readily provide an organisation.
Use the branch.company to get the name of the organisation or any other details of the company/organisation that is hosting the opportunity.
Date of deprecation:
27th May 2020, after this, you will see a notice in development consoles that the field has been deprecated. If an opportunity does not have a branch associated with it during creation and you request for the organisation, the API will throw a 500 error.
Date of removal:
30th June 2020, after this, the field will no longer be available on the OpportunityType