Tag photos based on data from external source

[ABDUL32842661rowe]

Hi,
I have a workflow, that i would like to get automated, and i am sure, will be handy to many others.

I have lightroom albums for 500-100 pics each from different shoots.
Clients send me a list of filenames (say 50-100) that they want some action to be done on (say they want those photos to be edited).
I want to be able to input the list of file names somehow, and make Lightroom tag them with 5* (or anything really), instead of me having to scroll through the 500+ photos to find the specific files requested by client.

Is there a way to do this currently? Can i do it via programming SDK (if so, any samples to start with)? 

[GoldingD]

Are these photos already in your catalog when the customer makes the request?

How are the customers accessing the photos? An shared album on the cloud?

https://helpx.adobe.com/lightroom-classic/help/share-comment-feedback-collaborate.html

[johnrellis]

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"I want to be able to input the list of file names somehow, and make Lightroom tag them with 5* (or anything really)"

One method, which only works if the file names don't contain spaces:

1. Paste the list of file names into your favorite text editor.

2. Replace all the line breaks with spaces, so you have one very long line, with the file names separated by spaces.

3. In the Library Filter bar's Text filter, do "Filename contains" and copy/paste the line from step 2:

4. Select all the displayed photos and put them in a collection, assign them a 5 star rating, set a color label, etc.

If you find steps 1 and 2 tedious, then see the Extended Search plugin, which obviates the need for changing line breaks to spaces and which will work with file names containing spaces.