Developer support

clock 1-minute read calender updated Sep. 25, 2025

FAQs

Resources

FAQs

Have a question? Chances are someone else did too!

Check out our FAQs

Decoder

Resources

Parameter codes

Quickly look up codes by API product or parameter name.

Decode the code

Error Handling

Resources

Error handling

Discover how we format our error messages

How to read our errors

Troubleshooting

Resources

Troubleshooting

Diagnose and resolve common issues by HTTP status code

Diagnose and resolve

Client Support

Resources

Support request

Contact the developer support team or request a working session. Only for KeyBank clients.

Connect with us

Release Notes

Resources

Release notes

Easy-to-read summaries of the changes we have made to the developer portal for each release.

See what's changed

Glossary

Resources

Glossary

Look up industry terms, jargon, or acronyms found in the developer portal content.

Discover what it means