As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN READY TO PUSH, FIRST OFFICER TRIED TO ARM SLIDE. RT SLIDE WOULD NOT ARM. RECEIVED A GREEN DOOR LOCKED INDICATION BUT NO SLIDE ECAM. REMOVED AUTONOMOUS POWER SUPPLY UNIT & BOTH BATTERIES IAW MM 52-73-18-04. OPS CHECKED GOOD IAW MM 52-73-00-05-02. ACFT OK TO CONTINUE.