> ## Documentation Index
> Fetch the complete documentation index at: https://docs.meld.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Updating Connection Products

Products on a connection are first specified in the `/connect/start` request, but you may want to add products **retroactively** — for example, enabling `INVESTMENT_HOLDINGS` on a connection that originally only requested `BALANCES`. This page is for developers expanding the data they retrieve from an existing connection without sending the customer back through the widget.

## Before you begin

<Info>
  * You have an existing connection in a non-terminal status (not `EXPIRED` or `DELETED`)
  * The product you want to add is supported for retroactive addition on the connection's underlying service provider — see the support matrix below
  * You understand that the new product lands in `optionalProducts` and is aggregated on a best-effort basis
</Info>

## How updating works

Call the [update endpoint](/api-reference/bank-linking) with the connection id and the products to add. Depending on the service provider, there may be limitations on which products can be added retroactively — the institution may not support the new product, or the provider may require additional customer consent. The newly requested products are added to `optionalProducts` on the connection and are aggregated on a best-effort basis.

<Warning>
  Adding products via the update endpoint does **not** guarantee data will be returned for those products. If the provider requires re-authentication, you may need to send the customer through the [repair flow](/docs/bank-linking/manage-connection-status/repairing-connections) to capture the new product.
</Warning>

<Note>
  For the full request and response schema, refer to the [Bank Linking API reference](/api-reference/bank-linking).
</Note>

## Support matrix

Below are the products that can be added post-connect for each service provider (assuming the institution already supports them):

|                                                                             |                                                                                                                                                                    |                                                                                                                                                         |                                                                                                                                                             |                                                                                                                                                                    |                                                                                                                                                                           |                                                                                                                                                                               |
| :-------------------------------------------------------------------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------ | :---------------------------------------------------------------------------------------------------------------------------------------------------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|                                                                             | <div style={{ textAlign: "center" }}> <strong> [Identifiers](/docs/bank-linking/bank-linking-quickstart/bank-linking-products/account-identifiers) </strong></div> | <div style={{ textAlign: "center" }}> <strong>[Owners](/docs/bank-linking/bank-linking-quickstart/bank-linking-products/account-owners) </strong></div> | <div style={{ textAlign: "center" }}> <strong> [Balances](/docs/bank-linking/bank-linking-quickstart/bank-linking-products/account-balances)</strong></div> | <div style={{ textAlign: "center" }}> <strong>[Transactions](/docs/bank-linking/bank-linking-quickstart/bank-linking-products/account-transactions)</strong></div> | <div style={{ textAlign: "center" }}> <strong> [Investment Holdings](/docs/bank-linking/bank-linking-quickstart/bank-linking-products/account-investments)</strong></div> | <div style={{ textAlign: "center" }}> <strong> [Investment Transactions](/docs/bank-linking/bank-linking-quickstart/bank-linking-products/account-investments)</strong></div> |
| [Finicity](/docs/bank-linking/partner-details/finicity)                     | <div style={{ textAlign: "center" }}> X </div>                                                                                                                     | <div style={{ textAlign: "center" }}> X </div>                                                                                                          | <div style={{ textAlign: "center" }}> X </div>                                                                                                              | <div style={{ textAlign: "center" }}> X </div>                                                                                                                     | <div style={{ textAlign: "center" }}> X </div>                                                                                                                            | <div style={{ textAlign: "center" }}> X </div>                                                                                                                                |
| [Plaid](/docs/bank-linking/partner-details/plaid)                           | <div style={{ textAlign: "center" }}> X </div>                                                                                                                     | <div style={{ textAlign: "center" }}> X </div>                                                                                                          | <div style={{ textAlign: "center" }}> X </div>                                                                                                              | <div style={{ textAlign: "center" }}> X </div>                                                                                                                     | <div style={{ textAlign: "center" }}> X </div>                                                                                                                            | <div style={{ textAlign: "center" }}> X </div>                                                                                                                                |
| Yodlee                                                                      |                                                                                                                                                                    |                                                                                                                                                         |                                                                                                                                                             |                                                                                                                                                                    |                                                                                                                                                                           |                                                                                                                                                                               |
| [MX](/docs/bank-linking/partner-details/mx)                                 |                                                                                                                                                                    |                                                                                                                                                         |                                                                                                                                                             | only if `INVESTMENT_TRANSACTIONS` is already a product                                                                                                             | only if `INVESTMENT_TRANSACTIONS` is already a product                                                                                                                    | only if `TRANSACTIONS` or `INVESTMENT_HOLDINGS`is already a product                                                                                                           |
| [Salt Edge Open Banking](/docs/bank-linking/partner-details/salt-edge)      |                                                                                                                                                                    |                                                                                                                                                         |                                                                                                                                                             |                                                                                                                                                                    |                                                                                                                                                                           |                                                                                                                                                                               |
| [Salt Edge Partners](/docs/bank-linking/partner-details/salt-edge-partners) |                                                                                                                                                                    |                                                                                                                                                         |                                                                                                                                                             |                                                                                                                                                                    |                                                                                                                                                                           |                                                                                                                                                                               |
| Mesh                                                                        |                                                                                                                                                                    |                                                                                                                                                         |                                                                                                                                                             |                                                                                                                                                                    |                                                                                                                                                                           |                                                                                                                                                                               |
| Akoya                                                                       | <div style={{ textAlign: "center" }}> X </div>                                                                                                                     | <div style={{ textAlign: "center" }}> X </div>                                                                                                          | <div style={{ textAlign: "center" }}> X </div>                                                                                                              | <div style={{ textAlign: "center" }}> X </div>                                                                                                                     | <div style={{ textAlign: "center" }}> X </div>                                                                                                                            | <div style={{ textAlign: "center" }}> X </div>                                                                                                                                |

<Note>
  For MX, `INVESTMENT_TRANSACTIONS` can only be added after the connection is made if `TRANSACTIONS` was specified as a product on the original `/connect/start` call, and vice versa.
</Note>

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