Post r19 upgrade, Few fast load jobs were failing with PFL0099E - User lacks the required LOAD authority.
Kindly suggest how to give only LOAD Auth to that user.
We see that you opened a case with Support regarding this question and received the answer.
The CA Fast Load for DB2 for z/OS plans must be bound and the user must have EXECUTE authority on the plans.
User must have one of the following DB2 authorizations: - SYSADM or SYSCTRL authority - DBADM or DBCTRL authority for the database containing the table to be indexed - LOAD authority for the database containing the tablespace to be loaded