---
title: Financial Institution Parameters
slug: payments/financial-institution-parameters
docTags: 
createdAt: 2025-05-22T19:29:24.949Z
---

Financial institution parameters, or **FI data**, are specific pieces of information that some merchants must provide to their PSP with each payment. These merchants, often called *6012 merchants*, have unique transaction requirements.

Most customers do not need to use FI data. If you’re unsure whether this applies to you, check with your PSP. 

To find out which PSPs we currently integrate with that support this feature, contact our support team at[ support@unaric.com](mailto\:support@asperato.com).

## Specifying FI data

If your PSP requires FI data, follow these steps to provide it:

1. **Collect the required FI data from your customer.** This may include:
   - `fiSurname`: The surname of the recipient.
   - `fiPostcode`: The postcode of the recipient.
   - `fiDoB`: The date of birth of the primary recipient in the format `YYYYMMDD`.
2. Insert the JSON object into the PSP Passthrough Parameters field on the payment record in Salesforce. This field accepts JSON-formatted data.

### Example

For a recipient with the surname `Windsor`, postcode `SW1A 1AA`, and date of birth `21st April 1926`, the JSON object would be:

:::CodeblockTabs
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```json
{
    "fiSurname": "Windsor",
    "fiPostcode": "SW1A 1AA",
    "fiDoB": "19260421"
}
```
:::

## Additional information

PSPs also require a field called `fiAccountNumber`, which includes the first six and last four digits of the payment account number. You don’t need to provide this field manually—Unaric Payments generates and sends it automatically when other FI data is included.