Your initial statement was correct. WCDMA ETSI spec (as well GSM and LTE all are the same) have requirements for spurious emissions outside of the band (including harmonics) as in the table below.
These are system requirements for out-of-band spurious emissions, so if a PA fail this spec, doesn't mean cannot be used. WCDMA systems (full-duplex system) always use a duplexer at the output, which will reject a lot of harmonics. You have to do an RF system analysis.