# JPMC-PDP Documentation from https://developer.payments.jpmorgan.com

# Resources

This page provides reference information for check stop and revoke, including supported values and limits.

## Currency codes

Currency codes specify the currency for payments. The following table shows the supported codes by country:

 
**Currency codes**

| Country | Currency Code | 
| --- | --- | 
| Canada | - CAD - USD | 
| United States | - USD | 

## Validation logic

- Duplicate check stop: If a check stop has already been recorded, the system displays a duplicate error message.

- Revoke process: When initiating a revoke, the system first checks for an existing stop on file. If no stop is found, the revocation cannot proceed.

## Value - amount limits

Defines the minimum and maximum allowed payment values:

 
**Value – amount limits**

| Country | Value-amount minimum | Value-amount maximum | 
| --- | --- | --- | 
| - Canada - United States | $0.00 or blank | $99,999,999.99 | 

## Related

- For more information about check stop and revoke, see [Overview](/docs/treasury/checks/capabilities/stop-and-revoke/overview).

- For more information about required and optional parameters, see [Parameters](/docs/treasury/checks/capabilities/stop-and-revoke/parameters).

- For more information about stoping a check, see [manage check stop](/docs/treasury/checks/capabilities/stop-and-revoke/how-to/check-stop-and-revoke).

- For more information about revoking a check, see [manage check revoke](/docs/treasury/checks/capabilities/stop-and-revoke/how-to/stop-and-revoke).