Xperia z5 BL UNLOCKING ERROR

Hello, i need help about my xperia z5, i try to unlock my bl via flashtool but when i put unlock code i took this error ''FAILED (remote: Command not allowed)''. What i have to do to fix this error?
I posted my device status and flashtool logs.

Attached Thumbnails

 

Attached Files

flashtool_2016-04-29_06-14-48.log - [Click for QR Code] (2.9 KB)

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