No official LineageOS support for this device.
there is lineageos 16.0 now for sony z3 d6603, see here:
https://wiki.lineageos.org/devices/z3
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and here you can find and /e/ version for D6603:
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Here’s a new build of this ROM from the latest v0.9-pie
tag https://www.androidfilehost.com/?w=files&flid=314369