How to fix cross-account pass role alert for CodeDeploy CI/CD creation?

I'm trying to make a deployment group in CodeDeploy and keep getting 'Cross-account pass role is not allowed'. I checked to see if this is regarding IAM Users and roles, and even added some to a user account, but it's not working.

The weird thing is, I don't have two AWS accounts. (At least to my knowledge).

I'm not sure which account i'm allegedly posting *from *or *to *when this error applies. Where can I find this information?