OAM Web-agent on OHS error: unknown authentication scheme

Environment:

OAM: 11.1.2.2.6

OAAM: 11.1.2.2.1

Bundle Patch applied: 20963120

OHS: 11.1.1.7.0

Webgate: 11.1.2.2.0

OS: Linux 6.5 64-bit

We have a test application deployed on WLS, and OHS does a reverse proxy to the app.

Before OAM-OAAM integration (advanced integration):

- we're able to access the web-pages

- the web-agent is configured as a DCC

- OAM is on Cert Mode

- Everything works fine.

After OAM-OAAM integration:

- we changed the authentication policy for protected resource on OHS from DCC to TAPScheme

- On accessing the resource we get the error as

"Oracle Access Manager Error. The authentication scheme used for login is unknown to the WebGate plug-in. The scheme mask is 64."