Create asset
Create (or upsert) the security object in the bank core — a Share-in-Housing-Cooperation asset together with its collateral object and the BRF rent.
Overview
Create (or upsert) the "security object" the bank core needs for a new loan: a
Share-in-Housing-Cooperation asset (bostadsrätt) together with its collateral object and
the BRF rent. This is an intermediate enrichment step during loan preparation — the
entities live in the post-Offer scenario and changes as CREATE_ELEMENT entries. The
response acknowledges each entity the bank assigned an external id to, by the id it was
sent with plus that external id, and the caller writes the externalId back onto the
entity's basicEntityInformation (so a later call upserts instead of creating).
Assigning external ids is optional — an entity the bank assigns none to is omitted from
the response. Entity ids are the caller's; the bank core must not reassign them, and an
acknowledgement carrying an id the caller did not send is rejected.