Complex website needing to use SAML will not work with Form fill
CAUSE 3 :
In versions below 126.96.36.19953, Product Defect 6128: Form fill credentials are not stored when the application URL contains a JSESSIONID cookie.
In versions below 7.1.0, Product Defect 349351 - a trailing space breaks regex in filter property value
For configuration issues, please review the following document: How to Configure Advanced Form Fill Authentication Guide
If you need assistance please open up a Service Request with support and include a database snapshot, screenshot of error, and screenshot of form config.
Use SAML authentication
Defect 6123 fixed in One Identity Cloud Access Manager Hotfix release 188.8.131.5253 or higher
Defect 349351 fixed in One Identity Cloud Access Manager 7.1.0 or higher
Remove the space in the field
RESOLUTION 3 &4 :
If you are on version lower than 8, upgrade to the latest One Identity Cloud Access Manager release
Please refer to the release notes here