Server receiving different files which is not send by appian

Dear Team,

We are observing an unexpected behavior related to file generation and SFTP transfer. Please find the detailed explanation below.

System Configuration

1. We have a scheduler configured to run on weekdays (Monday to Friday) with CET timezone.

2. Scheduler timing: 22:00 CET.

3. The scheduler triggers a subprocess that pass a file name as parameter

   • Generates the file name dynamically using:
     TableName + today()

4. The file is generated using:

   • Export Data Store Entity to CSV smart service

   • The file is stored in an Appian folder.

5. The file is then transferred via:

   • Send File Over SFTP (Basic Credential) smart service.

6. Total files generated per run: 75 files

Observed Issue

As per configuration:

• Files are generated in Appian with date:
  TableName + 24022026 (24 Feb 2026)
  These files are correctly stored in Appian.

However, on the SFTP server:

• Files with 24022026 are present (expected).

• Additionally, files with 25022026 (25 Feb 2026) are also present.

• These 25-date files:

  • Are fewer than 75 files.

  • Do NOT exist in Appian.

  • Have smaller file sizes in some cases (e.g., 200 KB vs 50 KB).

  • This happened yesterday as well like for yesterday we were expecting files with 23 date but received 24 date file as well on sftp server

Additional Observation

For the last 3 Saturdays, one file is being generated with the Saturday date even though:

• The scheduler runs only on weekdays.

• No Saturday execution is configured.

Key Concerns

1. How are files with the next-day date (25 Feb 2026) appearing on the SFTP server when:

   • No such files exist in Appian?

   • No corresponding process instances are visible?

2. Why is one file getting generated with Saturday’s date when the scheduler is weekday-only?

Please help us identify the root cause at the earliest.

Note - This scheduler was working fine in 2025, data started disturb in FEB 2026