Create a fraud marker
Registers a DICT fraud marker for the taxpayer identified by taxIdNumber, optionally linked to a Pix key. requestId is the caller-provided idempotency key. Repeating a requestId with the same payload returns the same marker; repeating it with a different payload is rejected. The participant is determined by the authenticated tenant. When BACEN’s outcome is not known yet, the operation answers the retryable 502 / PIX-0141: nothing is registered here, and BACEN may still register the marker. Resend with the same requestId until the answer is not 502 / PIX-0141; a new requestId can register a second marker. A 504 / PIX-0054 leaves the outcome unknown too: resend it the same way.
Cuerpo
Optional Pix key tied to the marker. Maximum 77 BYTES UTF-8, not characters -- the schema deliberately does not declare maxLength (OpenAPI's maxLength counts characters, which would under-bound a multi-byte key); the byte-length limit is enforced at runtime (the service implementation).
"+5561999998888"
Respuesta
Fraud marker registered.

