<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Work on this issue](https://contributors.gitlab.com/manage-issue?action=work&projectId=278964&issueIid=384197) - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=384197) </details> <!--IssueSummary end--> ### Problem When typing a slash command that is not recognized, GitLab for Slack app returns an error message that does not help the user resolve the issue. | Current error | |---------------| |  | ### Proposal Update the message to include possible ways to resolve the situations. For example: :warning: **Project not found:** 1. Make sure the project path is correct. For example: `/gitlab gitlab-org/gitlab issue show 123` 2. Make sure the project is linked and authorized, see [Chat names](#) 3. To link a project, enable the chat integration in the project's settings. [Learn more](https://docs.gitlab.com/ee/user/project/integrations/gitlab_slack_application.html). :computer: [Block kit markup](https://app.slack.com/block-kit-builder/T0187G888CD#%7B%22blocks%22:%5B%7B%22type%22:%22section%22,%22text%22:%7B%22type%22:%22mrkdwn%22,%22text%22:%22:warning:%20*Project%20not%20found:*%22%7D%7D,%7B%22type%22:%22section%22,%22text%22:%7B%22type%22:%22mrkdwn%22,%22text%22:%22%E2%80%A2%C2%A0Make%20sure%20the%20project%20path%20is%20correct.%20For%20example:%20%5Cn%20%60/gitlab%20gitlab-org/gitlab%20issue%20show%20123%60%22%7D%7D,%7B%22type%22:%22section%22,%22text%22:%7B%22type%22:%22mrkdwn%22,%22text%22:%22%E2%80%A2%C2%A0Make%20sure%20the%20project%20is%20linked%20and%20authorized,%20see%20%3Chttps://gitlab.com/-/profile/chat_names%7CChat%20names%3E.%22%7D%7D,%7B%22type%22:%22section%22,%22text%22:%7B%22type%22:%22mrkdwn%22,%22text%22:%22%E2%80%A2%C2%A0To%20link%20a%20project,%20enable%20the%20chat%20integration%20in%20the%20project's%20settings.%20%3Chttps://docs.gitlab.com/ee/user/project/integrations/gitlab_slack_application.html%7CLearn%20more%3E.%22%7D%7D%5D%7D)