sourceAccountId

sourceAccountId is the identifier used to designate the account from which funds are debited in a financial transaction. It is a reference internal to a payment processor, bank, or financial platform that tracks the origin of funds within a transfer, payout, or other ledger activity.

In many application programming interfaces, sourceAccountId is a required or optional field in transfer requests. It identifies the originating account within the provider's system or a linked customer account, and is often paired with a destinationAccountId to specify the full debit-and-credit path.

The value is typically an opaque string such as a system-generated ID or UUID rather than a public bank account number. It may map to a customer wallet, an internal ledger account, or a linked external bank account, depending on the platform's data model.

Security and validation considerations include verifying that the source account exists and is active, ensuring the requester has authorization to debit it, checking for sufficient balance, and auditing all access and transactions. Protecting the identifier and masking sensitive fields in logs are common best practices.

In reconciliation and reporting, sourceAccountId enables traceability by linking a debit to its originating account. It is often used alongside destinationAccountId, currency, and amount, and may be complemented by additional metadata such as category or business unit.

Related concepts include destinationAccountId, accountId, and general ledger entries, as well as API field references in payment and banking integrations.