[LON-CAPA-users] Multiple use of ID error when uploading a PDF ?

Stuart Raeburn raeburn at msu.edu
Tue Dec 2 15:37:46 EST 2014

Hi Doug,

> "Error: multiple use of ID 24."

The message: 'Error: multiple use of ID' originates in the &loadmap()  
routine in /home/httpd/lib/perl/LONCAPA/map.pm

You'll need command line access to the library server for your domain  
so that you can edit the appropriate .sequence file and remove the  
duplicate ID.

You need to know the courseID, and also the name of the .sequence file  
which is generating this error message.  The sequence file you need to  
edit will be found at:


where <1>, <2>, and <3> are the first three characters of the course  
number, <coursenum> is the internal LON-CAPA course number (i.e., the  
part of the courseID after uiuc_) and <number> is some timestamp-like  
string which is the unique identifier for this folder.

Stuart Raeburn
LON-CAPA Academic Consortium

Quoting "Mills, Douglas G" <dmills at illinois.edu>:

> HI All,
> I have an instructor who was uploading a pdf of her lecture slides   
> yesterday the same as she does after every class and got the message  
>  "Error: multiple use of ID 24."   And she can no longer access that  
>  folder via the Content Editor.  Fortunately she is teaching  
> parallel  sections and is using separate Lon-Capa course sites so  
> she was able  to copy the lecture slides folder from the other  
> section and paste  into this one (I'm awaiting word from her on how  
> she maintained the  two sections since presumably she's uploaded all  
> the same lecture  pdfs into the same folders in both sections but  
> uploading  yesterday's pdf did not cause the error in the other  
> section -- but  awaiting further detail on that).
> Searching for the Lon-Capa error message I'm seeing it associated   
> with sequences and the like (and recall causing some of those   
> myself) but not seeing anything about the error occurring in a   
> context like this...
> Doug
> Douglas Mills
> Director of Instructional Technologies
> Department of Chemistry
> University of Illinois
> dmills at illinois.edu<mailto:dmills at illinois.edu>
> (217) 244-5739

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