If the operator fails to leave the warehouse in accordance with the first-in-first-out rule, the system will intercept this operation and a prompt window will pop up to inform that "earlier materials can be delivered".
If the operator does not issue the warehouse according to the first-in, first-out principle, the system intercepts the operation and pops up a prompt window to tell "there are earlier materials can be released."
If the operator does not leave the warehouse according to the first in first out principle, the system will intercept this operation and pop up a prompt window to inform "there are earlier materials to be delivered".