It is not possible to perform an operation from CCP that requires Terms and Conditions acceptance, an exception is thrown:
"failed to parse input document".
In the generic_worker.log an error
parser error : Input is not proper UTF-8, indicate encoding !
can be seen.
The issue is caused by the bug with id PBA-62973 ("Customer cannot view long "Terms and Conditions" agreement in national language in CCP").
The bug is fixed in BA 6.0.6, please update to that or later product version. As a workaround you may shorten Terms and Conditions to 4093 bytes.