> For the complete documentation index, see [llms.txt](https://docs.nexusglobalpayments.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nexusglobalpayments.org/addressing-and-proxy-resolution/address-types-and-inputs/financial-institution-identification.md).

# Financial Institution Identification

## Using with Account Id

An account ID (*`ACCT`*) only specifies the account, not the financial institution that holds that account. Therefore when the *`ACCT`* address type is selected, the Account Identification must always be used in conjunction with one of the `Financial Institution Identification` types in the table below.

{% hint style="info" %}
When the address type is ACCT, the response from the `Address Inputs` API will automatically include a field for the Financial Institution Identification.
{% endhint %}

### Using with a Proxy

{% hint style="info" %}
In some countries, such as the Philippines, the same proxy can be registered to multiple financial institutions. Therefore, it is necessary to collect the Financial Institution Identification for the Recipient.
{% endhint %}

### TABLE: Financial Institution Identification Types

The following Financial Institution Identification types are defined in ISO 20022.

| **CODE (ISO 20022)** | **MEANING**                                        | **TYPE**                 | **NOTES**                                                                                                                                                            |
| -------------------- | -------------------------------------------------- | ------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| BICFI                | Business Identifier Code for Financial Institution | Financial Institution Id | Used in conjunction with an Account Identifier (and in some countries, with the proxy)                                                                               |
| LEI                  | Legal Entity Identifier                            | Financial Institution Id | We are not aware of any IPS that uses LEIs to address payments, but the ISO 20022 messages can support use of LEI.                                                   |
| ClrSysMmbId          | (Non-BIC) Clearing System Member Id                | Financial Institution Id | Used in conjunction with an Account Identifier. Maps to ISO 20022 element *Financial Institution Identification > Clearing System Member Identification > Member Id* |