Use this API to create counterparty accounts. You can submit them as a batch and the API method will return a list of identifiers of the created counterparties if successful. You can then use this ID to retrieve the counterparty using GET /counterparty.

The status of the created counterparty will depend on the permissions of the technical user executing the API call:

APPROVED if the user has permissions to skip the 4-eyes check
PENDING if the user doesn't have those permissions and the counterparty needs to be approved separately by an authorized user before it can be used.