Hi @shgalaxyuser !!
Double check your target genome to map against at this step in the tutorial → Hands-on: ATAC-Seq data analysis / ATAC-Seq data analysis / Epigenetics (mapping)
Notice how that step is against the hg38 human genome, but your BAM dataset was mapped against the mouse mm10 genome. How can I tell? Because the assigned database “dbeky” is for mouse. If you click on your input BAM dataset on that same job details view you are copy/pasting from, you can see it.
Your form is set up correctly for human here:
That “mismatch” is what the tool is reporting with this part of the error message. It was expecting the human chromosome identifiers but found the mouse chromosome identifiers in the BAM.
This means that you will need to back up and re-do the mapping step again. It looks like you have deleted this dataset already, so I’m guessing that you maybe already found the problem and are doing that now?
And, great that you posted all of the details! Very helpful. Next time you can go ahead and also include the history share link – that will allow even more people to help! Since you are following a tutorial, the data shouldn’t have any privacy concerns. Even if this was your own data, you can always share for help then unshare after.
Please let us know how this goes and if you need more help! 