Altherma 3 MT W - looking for sensor R7T injection

[MichaelST01]

Based on the piping diagram from the outdoor unit I could not find the R7T Sensor "injection",
Does someone know which line in the definition file is this sensor?

All other sensors I found:
Name in Piping diagram - main/include/def/ALTHERMA(TOP-GRADE).h

R1T outdoor air - {0x20,0,105,2,1,"Outdoor air temp.(R1T)"}
R2T compressor discharge - {0x20,4,105,2,1,"Discharge pipe temp."}
R3T compressor suction - {0x20,6,105,2,1,"Suction pipe temp."}
R4T air heat exchanger, distributor - {0x20,2,105,2,1,"O/U Heat Exch. Temp."}
R5T air heat exchanger, middle - {0x20,8,105,2,1,"Heat exchanger mid-temp."}
R6T refrigerant liquid - {0x20,10,105,2,1,"Liquid pipe temp.(R6T)"}

R9T entering water - {0xA1,0,119,2,1,"(Raw data)Water heat exchanger inlet temp."}
R10T leaving water - {0xA1,2,119,2,1,"(Raw data)Water heat exchanger outlet temp."}