"Client did not publish a checksum value.
If you trust the uploaded artifact you can accept the actual checksum by clicking the 'Fix Checksum' button."
The warning appears when the deploying client does not provide checksums when uploading and Artifactory calculates it on its own.
This is kind of a 'maveny' approach that does not fit all clients (i.e. Git LFS, NuGet, others?) and might cause confusion with users.