Explanation:

- Trade Receivables Discounting System (TReDS) is a platform to facilitate the financing of trade receivables.

- When trade receivables are financed through TReDS, the factor needs to file details with the Central Registry.

- The filing should be done within a specific timeframe after assignment or satisfaction of debt.

Options Explained:

- Option 1 (20 days): Suggests one could take up to 20 days for this filing.

- Option 2 (30 days): Proposes a 30-day window.

- Option 3 (7 days): Implies a much shorter, week-long period.

- Option 4 (10 days): Traditionally accepted and noted standard for such filings.

- Option 5 (15 days): Offers a slightly extended period over a week.

The correct answer is Option 4 - 10 days. This means that details should be filed within this timeframe from the date of assignment or satisfaction.

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