Check problem  raised by Ms. Arlene regarding TL 20621, receiving takes long.
Step:
a. Tried to received the TL, error encountered "transfer is being modified by another user"
b. Execute the command WRKOBJLCK TRFHDR. Findings shows that file is lock to WS_RBS
c. End session of WS_RBS
d. Advice user to try receiving again