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1.3
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On this page
  • 1. check_funds
  • 2. block_funds
  • 3. initiate_payment
  • 4. retrieve_disbursement_id
  • 5. retrieve_beneficiary_name
  • 6. retrieve_reversal_reason
  • Bank Connector Factory
  • Example Bank Connector
  1. G2P Bridge
  2. Development
  3. Design

Interfaces

PreviousConfiguration parametersNextPhysical Organization

Last updated 6 months ago

Refer to the Technical architecture. As shown in the figure, all outward APIs towards a Sponsor bank are abstracted through an interface. This interface is in the library project - openg2p-g2p-bridge-bank-connectors

There is also an implementation of the interface (openg2p-g2p-bridge-example-bank-connector), that provides a reference implementation. This connector connects to a simulator application. The simulator application (openg2p-g2p-bridge-example-bank-api) simulates a Sponsor bank.

The interface, the connector factory and the example-bank-connector - together are packaged into a separate git repository - openg2p-g2p-bridge-example-bank

The interface defines the following APIs

1. check_funds

Arguments
Type

account_number

string

currency

string

amount

number

returns

attributes
Type

funds available status

FUNDS_AVAILABLE FUNDS_NOT_AVAILABLE

2. block_funds

Arguments
Description

account_number

The program funding account with the sponsor bank

currency

The currency of the funding account

amount

The total envelope amount - required for complete disbursal in that disbursement cycle

returns

Attributes
Description

block_result

SUCCESS or FAILURE

block_error_code

Error in case of FAILURE

block_result_reference

The block reference in case of SUCCESS

3. initiate_payment

It will take a collection of the following structure (payment structure)

This API will only acknowledge receipt of a payment instruction. The actual payment will be effected by the bank asynchronously

Arguments
Description

disbursement_id

This is the unique disbursement id - that identifies a single disbursement inside an envelope

remitting_account

This is the account in the Sponsor bank - from where the funds are remitted to the beneficiaries

remitting_account_currency

The currency of the funding account

payment_amount

The disbursement amount

funds_blocked_reference_number

The block_reference_number - that identifies the amount_block placed in the bank (funds earmarked for this envelope)

beneficiary_id

The beneficiary ID that uniquely identifies the beneficiary in that benefit program - this ID should come from the upstream MIS/PBMS systems

beneficiary_name

The name of the beneficiary

beneficiary_account

The account number of the Beneficiary - in the destination financial service provider

beneficiary_account_currency

This should ideally be the same as the funding account currency - typically the local currency of the nation

beneficiary_account_type

BANK_ACCOUNT MOBILE_WALLET EMAIL_WALLET

beneficiary_bank_code

The Bank code (destination bank) in which the beneficiary account is serviced (applicable for BANK_ACCOUNT)

beneficiary_branch_code

The branch code (of the destination bank) in which the beneficiary account is serviced (applicable for BANK_ACCOUNT)

beneficiary_mobile_wallet_provider

The code that identifies the service provider for the mobile wallet (applicable for MOBILE_WALLET)

beneficiary_phone_no

The mobile number where the beneficiary will be credited (applicable for MOBILE_WALLET)

beneficiary_email

The email address where the beneficiary will be credited (applicable for EMAIL_WALLET)

beneficiary_email_wallet_provider

The code that identifies the service provider for the email wallet (applicable for EMAIL_WALLET)

disbursement_narrative

Any narrative about the disbursement that will help in reconciliation with the account statement of the funding account

benefit_program_mnemonic

The program identifier - This can be used as a narrative by the destination bank - so that the beneficiary is able to identify disbursements from the benefit program

cycle_code_mnemonic

The cycle identifier - that can be potentially used as a narrative by the destination bank - useful for the beneficiary to identify disbursement payments

payment_date

The date on which the disbursement needs to be effected

returns

Attribute
Description

response

SUCCESS or FAILURE

4. retrieve_disbursement_id

Arguments
Description

bank_reference

This is the reference number of the payment - that has been assigned by the sponsor bank. The part that follows the "//" in field 61

customer_reference

This is the reference number (unique for every remittance/disbursement) that has been provided by the g2p-bridge application. In our case - it is the disbursement_id The part that precedes the "//" in field 61

narratives [0] to [5]

The 6 lines of narratives - 0 to 5 - Field 86 of the Account Statement

returns

Attribute
Description

disbursement_id

Depending on the sponsor bank - we need to extract this disbursement id from one of the three attributes In most cases - it should be the customer_reference - because that is the customer_reference (disbursement_id) The interface abstraction exists to take care of those outlier cases - where the sponsor bank has implemented it differently

5. retrieve_beneficiary_name

Arguments
Description

narratives [0] to [5]

The 6 lines of narratives - 0 to 5 - Field 86 of the Account Statement

returns

Attribute
Description

beneficiary_name

Depending on the sponsor bank - we need to extract the beneficiary name from one of the narratives fields

6. retrieve_reversal_reason

Arguments
Description

narratives [0] to [5]

The 6 lines of narratives - 0 to 5 - Field 86 of the Account Statement

returns

Attribute
Description

retrieval_reason

For reversal transactions (where the initial debit to the funding account was subsequently reversed - after a transaction was returned from the destination bank with an error) the reason for reversal has to be extracted from one of the narratives fields.

Bank Connector Factory

This Factory will return a BankConnector Interface

This BankConnector class will implement the BankConnector Interface

The Factory will return the Connector based on the "benefit_program.sponsor_bank_code"

def get_bank_connector (sponsor_bank_code : string) -> BankConnectorInterface

Example Bank Connector

The git baseline includes a connector that connects with the Example Bank (a bank simulator application). The Example Bank Connector - implements all the methods specified by the BankInterface

openg2p-g2p-bridge - Technical architecture