Updates the Issuing Token card reference ID for Visa to be optional
Updates the network_data.visa.card_reference_id string property of the Issuing Token object to be optional. Previously, it couldn’t be null. Changes the data type of the Issuing Token object’s network_data.visa.card_reference_id property from string to nullable string. If your integration accesses this property and assumes that it always has a non-null value, you need to update your code to handle null values.
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| [Updates the Issuing Token card reference ID for Visa to be optional](https://docs.stripe.com/changelog/dahlia/2026-03-25/visa-card-reference-id-optional.md) | Issuing | Breaking | api |
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Changes the data type of the Issuing Token object’s `network_data.visa.card_reference_id` property from string to nullable string. If your integration accesses this property and assumes that it always has a non-null value, you need to update your code to handle null values.
- The Issuing Token object now supports tokens from the Visa network that don’t have a reference ID by allowing the reference ID to be null. There is no change to the network_data.mastercard.card_reference_id property, which already supports null values.
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