Trying to update payment method for subscription get message Unable to process your request at this time. support and reference Error code: -81594, type: VALIDATION_ERROR

Hello there, jane24.

Currently, we have an open investigation regarding the error you received. Rest assured that our engineers are doing their best to fix this as soon as possible.
 

I encourage you to call our support team to add your company details to the list of affected users. Please follow these steps to do so.
 

1. Log in to your account.
2. Click the? Help button at the top right corner.
3. Go to the Search tab, then select Contact Us.
   
4. Enter a brief discussion with your concern, then click Continue.

Here's an article for more tips about managing QuickBooks subscription: Manage billing, payment, and subscription info in QuickBooks Online.

We appreciate your patience as we continue investigating this. If you have other concerns, the Community is always available to help. Feel free to share your inquiry, and I'll be prompt in assisting you.