An Endevor internal processing error occurred while processing an API request identified as: aaaa={ERET or LELM or EADD} A copy of the actual Endevor error message is inserted into the MFALOGE listing if MFA_ENDEVOR_LOGGING is active. The return code, reason code, and Endevor message numbers are described in the licensed CA/Endevor documentation: Endevor for z/OS Messages and Codes Endevor for z.OS API Guide