Why are some of my references marked 'Incompatible'?

If your reference was originally created in an earlier version of the PERRLA Add-In as an APA 6-compliant reference, you can also add it to your APA 7th Edition papers by using the Update & Add function.

But, if your reference was originally created as an APA 7th Edition-compliant reference, you'll notice that – if you start a new APA 6 paper or discussion post – your APA 7 references will look like the second reference in this list:

This is because PERRLA cannot retroactively convert an APA 7-compliant reference back to APA 6. If you created a reference in APA 7 format, you'll need to create it again (after starting an APA 6 paper or Discussion Post) using PERRLA's reference generator in order to make it compliant with APA 6th Edition.