Only One Primary Email Permitted After upgrading to PeopleTools 8.51, the sign on page started displaying the following message: Only one Primary Email Address is permitted. (48,9) This message may also appear when you are trying to update a user profile. It is caused by users having more than one primary email address flagged in the PSUSEREMAIL table: select OPRID, count(*) from PSUSEREMAIL where PRIMARY_EMAIL = 'Y' group by OPRID having count(PRIMARY_EMAIL) > 1; The fix is to change the PRIMARY_EMAIL flag from Y for all but one email address for each User (OPRID). One way is to set the primary email flag to N where an email address has not been specified (this may not always be an option). update PSUSEREMAIL set PRIMARY_EMAIL = 'N' where PRIMARY_EMAIL = 'Y' and EMAILID = ' ' and OPRID in ( select OPRID from PSUSEREMAIL where PRIMARY_EMAIL = 'Y' group by OPRID having count(PRIMARY_EMAIL) > 1 ); Other fixes might including picking a specific email type (e.g. BUS) as the primary email and changing all other types so that the primary email flag is N.