Get rid of some black list number from contacts file

[Feras95p]

Dear all,

I'm looking to design a workflow that gets rid of the black list contacts from the orginal file by checking the black list contacts number fron black list file:-

For example I have two files the first file is the original file which contains the data of all contacts number, what I'm looking for is to remove from that file the numbers which exist in black list file.

Any idea how to achieve that?   

[DataNath · Accepted solution]

@Feras95p one way would be to just conduct a join on the contact number. Any that join successfully (J output anchor) you can just ignore, and any coming out of the left (L/top) output anchor haven't matched and so you can carry on using these:

Would ignore these - joined successfully = blacklisted:

Not joined - carry on using: