Our map positions the two apart (tentative site plus Qhapap Nan. Are these the same?
My belief/understanding is
a. Our T List coordinates for Pachacamac are correct
b. We have correctly copied the UNESCO provided coordinates for PE-XP-40/CS-2011
c. Page 1862 of the Qapaq Nan Nomination file contains a map for PE-XP-40/CS-2011. That map shows PE-XP-40/CS-2011 to consist of 3 separate elements divided by main roads (the boundaries are shown by a red line) - if you look at the area on Google maps the 2 roads causing the division are clear - there is the main site of Pachacamac to the south and the "Humedales de Mamacona" Wetlands to the north of the "Antigua Panamericana" The Wetlands themselves are divided by a N/S highway. It would appear that the Humedales are considered a part of the site of Pachacamac.
d. BUT, the coordinates provided by UNESCO are actually in the built up area of Julio C Tello (Named after the Peruvian archaeologist who also has/had a palace at ChanChan named after him - see my review!). In the Qapaq Nan nomination file map for PE-XP-40/CS-2011 this suburb, including the chosen coordinates within it, is clearly outside all 3 of the "red line" bounded areas - and has the main site of Pachacamac to its south and the wetlands to its west and north. SO - the coordinates provided by UNESCO for PE-XP-40/CS-2011 are NOT INSIDE PE-XP-40/CS-2011 - and, in that sense are "incorrect".
e. HOWEVER (!!!!) the Qapac Nan map also shows a dotted yellow line from the centre of the Pachacamac site and then going north east THROUGH the suburb of Julio c Tello (i.e it goes both inside and OUTside the "red line" boundaries given for PE-XP-40/CS-2011!!) This dotted line is the route of the Qapaq Nan -this convention is used in all of the maps. I think you will find that the modern road of Avenida Julio Cesar Tello folows the route of the old Qapaq Nan as shown on the Nomination file map -SO the coordinates given inside the suburb are correct in showing one spot on the route of the Qapaq Nan! But quite why THAT spot should have been chosen isn't clear - is it a mistake which just happens to be on the route of the road or was it intended? Why wasn't a spot on the road INSIDE PE-XP-40/CS-2011 chosen? etc etc. The "Legend" accompanying the maps clearly states that the red line surrounds the "Nominated Property" (and even gives its area in Hectares to 2 decimal places!). But then it also says that the yellow dotted line is the Qapac Nan!
f. As we have commented before - the Qapaq Nan nomination file is an enormous "beast" which doesn't clearly explain the exact areas inscribed. For instance archaeological sites like Pachacamac are described as being "Associated with....." the Qapaq Nan. How many other Qapaq Nan coordinates have a similar "problem" I know not!
So - it is up to you - I would visit Pacahacamac thus picking up the T List and, whilst there ensure that I find the route of the yellow dotted line inside PE-XP-40/CS-2011 and then - possibly and ONLY if I had time and the inclination - try to follow the Qapaq Nan along the modern road in Julio Tello! It is a 1.6km walk from the Pachacamac Museum along the Panamericano and into Julio Tello to the Qapaq Nan locator!