I will do a few checks in that scenario then, state vector etc.
RLS is radius of the landing site. The AGS uses the value stored in address 231 as the reference for altitude calculations.
The procedure you are doing there is to prepare a manual state vector update on the lunar surface. The thought process apparently was, the state vector that the AGS has using accelerometers etc. after landing is very imprecise. And you could give it a more accurate state vector by updating the AGS with one landed at the desired landing site. And that is what you are preparing there. In address 262 you load the inertial velocity while on the surface, due to Moon rotating. That is the -00150 (15 ft/s). And you also give it a state vector time tag of the planned landing time. That is the "254+0767.2 (TLAND)" in the timeline book.
And the checklist line you are asking about is "240+ (231 RLS)". Address 240 is part of that landed, manual state vector update you are preparing. And you want to have it exactly at the landing site. So what you want to do there is load whatever you have stored in address 231 into 240. So you readout address 231, quickly memorize it and then load that value into address 240.
EDIT: State vector in the scenario seems fine. When exactly did you get the program alarm? Was it maybe when Average G starts in P63? And does the DSKY blank sometimes so that you have a hard time checking the program alarm with V05 N09? Then it could maybe be an issue with the resetting of a LR related flag. There is a bug in the Apollo 11 software that requires you to reset a flag every time you do the LR self test procedure. The resetting of the flag is done with: V25 N07E, 110E, 40E, E. Maybe you forgot the last enter or so?