# Reports reference (/reports/reference/overview)



PayPal report data uses standardized codes, currencies, and field names. Without a shared reference for these values, it's difficult to accurately interpret report output or build reliable integrations against it. This reference section provides the lookup tables and field definitions that developers and analysts need to work confidently with PayPal reports.

These resources cover 4 areas:

* **Supported currencies and cryptocurrencies:** Define which ISO 4217 currency codes and cryptocurrency codes are valid in report fields.
* **Transaction event codes (T-codes):** Classify what happened in each transaction event. Every row in a transaction report carries a T-code that identifies the event type — for example, a sale, a refund, or a chargeback.
* **Terminology and naming conventions:** Define the terms and file naming patterns that are used across all PayPal reports.
* **Report field changes:** Track column name updates in the Activity Download report. Integrations that reference column positions instead of column names break when fields are added or renamed, so this list can help catch and resolve those issues.

[PayPal-supported currencies](/reports/reference/supported-currencies)

A complete list of ISO 4217 currency codes that PayPal supports for payments and balances. Use this page to verify which currencies are valid for currency fields in your reports.

[PayPal-supported cryptocurrencies](/reports/reference/cryptocurrencies)

A list of cryptocurrency codes that PayPal supports. Use this page to identify which cryptocurrencies you can use with PayPal and include in reports.

[T-codes](/reports/reference/t-codes)

A complete reference for transaction event codes (T-codes), organized by category. T-codes identify the nature of each transaction event and appear in the `Type` and `Transaction Event Code` fields of the Activity Download report.

[Terminology reference](./terminology/)

A reference for the terms and file naming conventions used across PayPal reports. Use this page to understand report terminology and naming patterns when working with report files and documentation.

[Changed fields](./changed-fields/)

A reference for Activity Download report column names that have been updated or added over time. Use this page to understand field changes and ensure your integrations remain accurate when columns change.

## Next steps [#next-steps]

After reviewing this reference material, you can:

* Review [Changed fields](/reports/reference/changed-fields) before updating any integration that reads Activity Download report columns.
* Cross-check currency values against [PayPal-supported currencies](/reports/reference/supported-currencies) or [PayPal-supported cryptocurrencies](/reports/reference/cryptocurrencies).
* Use the [T-codes](/reports/reference/t-codes) reference to interpret transaction types in your reports.