Reviewer comment on a #rejected #conference paper:
"the validation is rather limited. The evaluation is based on simulated agents and synthetic scenarios, without evidence from real industrial systems or large-scale deployments. As a result, it is difficult to assess how usable and scalable it would be in realistic IS settings"
I'm not saying this was the only reason why the paper was rejected (though #validation was mentioned in all three reviews) but validation is too often used as an excuse to kill a paper.
Content of the post needs some refreshing but I already wrote "too much validation will kill you" 13 years ago: https://jordicabot.com/too-much-validation-will-kill-you/