Bandwidth-test fails with "bad id" error

I have one RB133c that returns a “bad id” whenever I try to perform a bandwidth-test internally. I can successfully perform the test from any other 133c to the same targets, but I get the error from this particular one when attempting to test to any target. I tried it with a mix of ROS from 2.9.38 to 2.9.43. All RB133c are configured in our environment using a script, and are identical except radio name and IP, which is handled by DHCP from the AP. This particular CPE has no difficulty routing traffic, connecting wirelessly, or getting anywhere on the intra or internet.

Any insight as to what the “bad id” means?