Response field valid_standing_order_intervals is no longer guaranteed

What changed

Producer-side tools call this non-breaking. For a consumer it is a null dereference on an unknown future date.

Affects valid_standing_order_intervals on PaymentInitiationStandingOrderMetadata reachable from 3 operations. Nothing fails at the call; it fails wherever the value is finally used, which is usually somewhere else entirely.

can now be null

Who is affected

Code that reads Plaid's PaymentInitiationStandingOrderMetadata objects, used by 3 Plaid operations.

Before and after

Code that breaks

// response.valid_standing_order_intervals may now be absent or null
const valid_standing_order_intervals = response.valid_standing_order_intervals ?? fallback;

Based on Plaid’s published API specification. How severity is decided.