application/json. The pipeline authenticates the caller (PBP-0003 at 401)
and authorizes the action (PBP-0004 at 403). It also opens the tenant’s storage (PBP-0008 at 503)
and runs the idempotency check. Everything the API layer catches answers an RFC 9457 problem
document on the application/problem+json media type. The service-wide rate limiter answers 429
with the plain text Too Many Requests and no error code.
type– A URI that identifies the error in the Lerian error catalog. Built ashttps://errors.lerian.studio/v1/<code>.title– The HTTP status text, for exampleUnprocessable Entity.status– The HTTP status code.detail– Text about this occurrence of the condition. The wording comes from the branch that raised it.code– A stable identifier for the condition. Branch on this value.errors– Optional list of per-field validation details, each with amessage, alocation, and thevaluefound there.
detail member carries a fixed text instead of a description of your request, so read code to identify the condition.
The flat body carries code, title, message, and an optional details object. It
never carries type, status or detail.
Five codes reach you as a flat body when the idempotency check raises them: PBP-0002,
PBP-0007, PBP-0008, PBP-0012 and PBP-0013. The pipeline also answers this way for a failure
that no handler caught. So read the media type rather than the code to tell the two bodies apart.
Platform errors
These codes are not specific to one rail. The transport layer, the request pipeline and the handlers raise them.
Provider errors
These codes carry the payment provider’s answer. What is safe to resend depends on the operation, so read the operation’s error descriptions in the API reference before you resend.
Boleto errors
These codes answer the boleto rail: issuance, installments, cancellation and PDF retrieval.
Payment errors
These codes answer the bill payment rail: bankslip, utilities, DARF and the bill consult.
Ledger errors
These codes carry the ledger’s side of a payment. What is safe to resend depends on the operation, so read the operation’s error descriptions in the API reference before you resend.
Webhook configuration errors
These codes answer a request that configures where this API pushes event notifications.
Inbound provider webhook errors
These four codes answer the payment provider that posts settlement events to the webhook endpoint. They tell that caller which repair its delivery needs.

