cheeky non-a5 question - timing chain adaption after replacement on my sons A3?

RR7 said:

alright dudes, i put this question here as i don't want to pollute the A5 stuff, but since my son likes my A5 so much he got himself a 1.2 TFSI A3.

anyway, the timing chain was replaced recently and the engine is now quiet, runs nice but the below fault code comes up even after a reset:

i don't really understand what this is tell me, does this mean i need to reset some adaptions or does it mean someone has replaced the chain and its a few degrees out?

code below:
"
18723 - Chain Elongation
P150D 00 [109] - -
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 124462 km
Date: 2023.02.10
Time: 14:37:33

Engine speed: 1383.00 /min
Normed load value: 2.7 %
Vehicle speed: 43 km/h
Coolant temperature: 54 °C
Intake air temperature: 8 °C
Ambient air pressure: 1020 mbar
Voltage terminal 30: 14.726 V
Unlearning counter according OBD: 40
Timing deviation after chain replacement: intake bank 1: -10.12 °
Timing deviation after other repairs: intake bank 1: 0.00 °
Timing deviation: current value intake bank 1: -4.93 °
Chain elongation: no. of valid initial values: intake bank 1: 5
"

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