Error building SCP command syntax in read loop - bash

Question

I'm trying to get a list of files copied by SCP from one server to another but the command seems not to be getting build correctly in the read loop.
I have a file called diff_tapes.txt which contains a list of files to be copied as follows:
/VAULT14/TEST_V14/634001
/VAULT14/TEST_V14/634002
/VAULT14/TEST_V14/634003
/VAULT14/TEST_V14/634004
etc etc...
The bash command line I'm using is as follows:
while read line; do scp -p bill#lgrdcpvtsa:$line $line;done < /home/bill/diff_tapes.txt
When I execute that from the command line (I'm running on CentOS so basically Red Hat) I get:
/VAULT14/TEST_V14/634001: No such file or directory
... for every single file.
If I run again adding the -v switch to get more info, I see the following:
debug1: Sending command: scp -v -p -f /VAULT14/TEST_V14/634001
The remote server (lgrdcpvtsa) definitely has the files in question:
[bill#LGRDCPVTSA TEST_V14]$ pwd
/VAULT14/TEST_V14
[bill#LGRDCPVTSA TEST_V14]$ ls -ll
total 207200
-rw------- 1 bill bill 27263700 Apr 26 11:16 634001
-rw------- 1 bill bill 27263700 Apr 26 11:16 634002
-rw------- 1 bill bill 27263700 Apr 26 11:16 634003
-rw------- 1 bill bill 27263700 Apr 26 11:16 634004
It's as though the second time I have $line in the scp command, it's ignored.
Any idea what's wrong with the syntax?
EDIT:
For clarity, the list of files is more likely to be like this:
/VAULT14/634100_V14/634001
/VAULT11/601100_V11/601011
/VAULT12/510200_V12/510192
And /VAULT10 through /VAULT14 exists on both servers, it's just the next folder node might not.
These files are files flagged as being different on local vs remote machine, hence copying from the remote machine which is the correct data source, so a recursive copy won't work here (I think the -r switch was a hangover from an earlier test so I've removed that from the code above).

Answer 1

The error is probably because the local directory /VAULT14/TEST_V14/ does not exist.
You can use the dirname command to get the directory name from the path, create the directory, and then executing the scp command. Example
while read line; do mkdir -p "$(dirname "$line")"; scp -rp bill#lgrdcpvtsa:"$line" "$line";done < /home/bill/diff_tapes.txt
The -p option tells mkdir to create the subdirectories even if the parent does not exist.
EDIT:
This was copying all the files to / so have changed to the following which is working perfectly:
while read line; do mkdir -p "$(dirname "$line")"; scp -p bill#lgrdcpvtsa:"$line" "$line";done < /home/bill/diff_tapes.txt

Answer 2

/VAULT14/TEST_V14/634001: No such file or directory
This is likely because the folder /VAULT14/TEST_V14/ does not exist on the local machine.
Result:
mkdir /VAULT14/TEST14
while read line; do
scp -p bill#lgrdcpvtsa:"$line" "$line"
done < /home/bill/diff_tapes.txt