How to collate audit requirements under a single report/place

Summary: Business requires a report for audit purpose which can incorporate these 5 points:

1. PO details
2. Invoice details
3. Invoice & PO prints
4. Approvals at each level (PO, AP)
5. Accounting generated for each transaction at each level

Is there any way in which this can be achieved?

Content (required): Business requires a report for audit purpose which can incorporate these 5 points:

1. PO details
2. Invoice details
3. Invoice & PO prints
4. Approvals at each level (PO, AP)
5. Accounting generated for each transaction at each level

Is there any way in which this can be achieved?

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