11:00:38,785 WARN [verifier] EJB spec violation: Bean : BufferSB Section: 7.10.6 Warning: A stateless session bean must define exactly one create() method with no arguments. 11:00:38,800 WARN [verifier] EJB spec violation: Bean : BufferSB Section: 7.10.6 Warning: A session bean's remote home interface must define one or more create(...) methods.
For stateless SB exactly one 'create()', for stateful SB one or more 'create(...)' methods. That's no contradiction, only a generalization in the second warning.