We are getting -1 ANONYMOUS for running Generate Preventive Maintenance Work Orders in EAM

We are getting -1 ANONYMOUS for running Generate Preventive Maintenance Work Orders in EAM, but only some of the work orders had -1 and some had the correct created by user. Anyone know why? The log file gives no help.

+---------------------------------------------------------------------------+Enterprise Asset Management: Version : 12.2Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.EAMPMSDU: Generate Preventive Maintenance Work Orders+---------------------------------------------------------------------------+Current system time is 20-NOV-2025 12:01:33+---------------------------------------------------------------------------+[20-NOV-2025 12:01:33]: **Starts**[20-NOV-2025 12:10:00]: **Ends**+---------------------------------------------------------------------------+Start of log messages from FND_FILE+---------------------------------------------------------------------------+txn date: 2025/11/20 12:09:56txn date: 2025/11/20 12:09:56txn date: 2025/11/20 12:09:56txn date: 2025/11/20 12:09:56txn date: 2025/11/20 12:09:56txn date: 2025/11/20 12:09:56txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20 12:09:57txn date: 2025/11/20