Question: how to download ldt file for lookup?
Answer: Following fndload commands used to download and upload the lookup.
FNDLOAD apps/<PWD> 0 Y DOWNLOAD $FND_TOP/patch/115/import/aflvmlu.lct <LDT_FILE_NAME>.ldt FND_LOOKUP_TYPE APPLICATION_SHORT_NAME="APP_SHORT_NAME" LOOKUP_TYPE="<LOOKUP_CODE>"
FNDLOAD Command to Upload a lookup.