How to change PO title in BPM work list?

Summary:

In BPM work list, po approval comes as 'Approve Purchase Order 85000'

we want a way to update the title like 'Approve 'BU NAME' Purchase order 85000'

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Version (include the version you are using, if applicable):

Oracle fusion Cloud

Code Snippet (add any code snippets that support your topic, if applicable):