Does it matter which dimm slot i put my ram in?

Memory failure on DIMM2 Dell T3500 dimm 2 slot Buy Adapter to 2 PCIe NVME SSD For ASUS Rog M9A M10A R6A R6E M12E x399ZE MB at Aliexpress for Find more 7, 70806 and products dimm slot meaning DIMM slot locations DIMM slots are numbered sequentially for each processor DIMM slot locations

dimm2 slot How can I fix it? I already switched the RAM between slots something like 5 or 6 times It always says DIMM2 regardless what I change memory