You can upload up to 500 subsidiaries in an all-or-nothing fashion. If a subsidiary within a batch is malformed or violates a database constraint, the entire batch containing that subsidiary will be disregarded.
To have a successful upload, please sanitize the data and ensure the subsidiaries that you are trying to upload do not already exist on Ramp.
If a subsidiary is already on Ramp but you want to update its attributes, please use the PATCH developer/v1/accounting/subsidiaries/{id} endpoint instead.