Western Alliance Bancorporation Webhooks

generated: '2026-09-17'
method: searched
source: https://developer.westernalliancebank.com/sfsites/c/cms/delivery/media/MC2GPNZ5A6AFBB7FPCQ6YISYCQY4
api: Western Alliance Bank Intrabank Transfer API
summary: >-
  Western Alliance Bank pushes a JSON webhook to a client-configured endpoint "almost immediately after the transfer
  is processed" for intrabank transfers initiated through POST /trnsct-ibt-eapi/api/v1/transactions/intraBankTransfer.
  The guide calls it "the primary confirmation tool"; the Search, Intraday and Prior Day APIs are fallbacks. No
  AsyncAPI document is published, so this is a catalog of what the user guide documents - nothing more.
delivery:
  transport: https-post
  content_type: application/json
  configuration: webhook endpoint is set up with the bank during enrollment ("if you have set up a webhook endpoint"); no self-service registration API is published
  signature: not documented
  retries: not documented
  dedup_field: PaymentMessageReference (with PaymentId as the client's own key)
  masking: account numbers are masked to the last four digits (OriginatorAccountId "*1212", BeneficiaryAccountId "*1313")
  common_fields:
  - SystemIdentifier
  - PaymentId
  - PaymentMessageReference
  - StatusCode
  - StatusMessage
  - TransferType
  - Amount (zero-padded cents, 17 chars)
  - Currency
  - FundTransferDirection
  - FundTransferReleaseDate (yyyyMMdd)
  - FundTransferReleaseTime (HHmmss)
  - RemittanceInformation
  - OriginatorAccountId (masked)
  - OriginatorName
  - BeneficiaryAccountId (masked)
  - BeneficiaryName
events:
- name: intrabank_transfer.confirmed
  status_code: ACSC
  status_message: Confirmed
  transfer_type: FTRINF
  description: The transfer was executed and recorded internally; money is moving.
  example:
    SystemIdentifier: ECG
    PaymentId: '09232025124'
    PaymentMessageReference: '526605645490'
    StatusCode: ACSC
    StatusMessage: Confirmed
    TransferType: FTRINF
    Amount: '00000000000000124'
    Currency: USD
    FundTransferDirection: O
    FundTransferReleaseDate: '20250923'
    FundTransferReleaseTime: '042159'
    RemittanceInformation: TestTransaction
    OriginatorAccountId: '*1212'
    OriginatorName: INFORMATION SURVEILLANCE
    BeneficiaryAccountId: '*1313'
    BeneficiaryName: INTERNAL ACCOUNT
- name: intrabank_transfer.rejected
  status_code: RJCT
  status_message: Rejected
  transfer_type: FTRCAN
  description: The transfer was rejected or cancelled; FundTransferReasonCode / FundTransferReasonDescription say why.
  additional_fields: [FundTransferReasonCode, FundTransferReasonDescription]
  example:
    SystemIdentifier: GEM
    PaymentId: '98481213454'
    PaymentMessageReference: '527601355732'
    StatusCode: RJCT
    StatusMessage: Rejected
    TransferType: FTRCAN
    Amount: '00000000000024311'
    Currency: USD
    FundTransferDirection: O
    FundTransferReleaseDate: '20251003'
    FundTransferReleaseTime: '064753'
    FundTransferReasonCode: MS01
    FundTransferReasonDescription: Unable to process
    RemittanceInformation: testing Intrabank Transfer API GEM
    OriginatorName: WSB CORP LTD
    OriginatorAccountId: '*4321'
    BeneficiaryAccountId: '*6789'
    BeneficiaryName: TOM HANK
other_products:
  note: >-
    No webhook is documented for wires, ACH, book transfer, stop payments or TassatPay in the published collections;
    TassatPay exposes paired /status polling endpoints instead.