Resolution

Updating account status to Inactive for multiple accounts at once can be done in 2 programs: Account Master or Account Mass Change/Reset:

To update via Account Master:

Financials > General Ledger Menu > Set Up/Chart of Accounts > Account Master

Search for the Segment that is attached to the GL accounts you want to update.
Click Global Update on the ribbon.
Select Inactive and define other fields as needed.
Click Accept.
Click Yes

To update via Account Mass Change/Reset when all other users are off system; saving a backup first is recommended.

Financials > General Ledger Menu > Set Up/Chart of Accounts > Account Mass Change/Reset

Click Define
Select Inactivate in Activity field
Select Fund, Org, Project, or Account for Access Method
Enter the Segment defined in Access Method that is attached to the GL accounts needs to be Inactive from the corresponding segment
Click Accept
Click Process

As a result all GL Accounts that are attached to the segment will be in Inactive status.

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