Transferer or Transferrer: How To spell?
The word Transferer is misspelled against Transferrer, a noun meaning "One who makes a transfer or conveyance."
Transferrer has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings transfe & er which should not be misspelled with single 'R'
Wrong Spelling:  transfe-r-er  Correct Spelling:  transfe-rr-er 
Explore spell check of Transferrer to spell without errors.