I described my problem (a huge log file), my efforts to resolve it (numerous web searches and reading articles that looked relevant), and my requested solution (a comprehensive list).

I personally would consider the following question asking for a learning material.

Does anyone have a link to a complete list of Robocopy error messages that would appear in a log file?

Which is the reason I would agree with the selected close reason. We don’t really do “lists” questions.

Questions seeking product, service, or learning material recommendations are off-topic because they become outdated quickly and attract opinion-based answers.

I described my problem (a huge log file), my efforts to resolve it (numerous web searches and reading articles that looked relevant), and my requested solution (a comprehensive list).

I personally would consider the following question asking for a learning material.

Does anyone have a link to a complete list of Robocopy error messages that would appear in a log file?

Which is the reason I would agree with the selected close reason. I have never seen a question, asking for what is potentially a huge list, be well received in my decade at Super User.

Questions seeking product, service, or learning material recommendations are off-topic because they become outdated quickly and attract opinion-based answers.