Get every contact associated with a company, regardless of whether the contact is primary or not.
SOLVE
Hey, you need to make a call to the /crm/v3/objects/companies/{companyId}?associations=contacts then use the result to populate the ids for your batch call to contacts /crm/v3/objects/contacts/batch/read
This way you'll be getting all the associated contacts of a company then you'll be retrieving the info of the contacts which is associated to the company.
Get every contact associated with a company, regardless of whether the contact is primary or not.
SOLVE
Yes. You can use the batch endpoint for the Associations but if you need to retrieve the properties of the contacts then you will still need to call the batch endpoint for the Contacts object. You'll still make 2 calls (Associations "associations/companies/contacts/batch/read" & Contacts endpoints) in the API to retrieve the data of a batch contacts.
Get every contact associated with a company, regardless of whether the contact is primary or not.
SOLVE
But that's the issue here @ChrisMagtoto . We don't get the non-primary associations in the batch association endpoint. ('associations/companies/contacts/batch/read')