If the application is installed in PostgreSQL execute the Command from CMD.
C:\ManageEngine\ServiceDesk\pgsql\bin psql.exe -U postgres -p 65432 -d servicedesk
Below the query to change the mobile numbers to primary numbers to import your data from LDAP.
1. First query to find the tables -
select * from "public".sdldapfieldmap
2. Second query to update the value of the database -
update sdldapfieldmap set ldapfieldname='mobile' where sdfieldname='phone';