Wrong Gstr-9 Summary 2020-21 generated

Users are reporting discrepancies between their computed GSTR-1 and GSTR-3B figures for 2020-21 and the generated GSTR-9 summary. They are questioning if this is a GST portal error, particularly concerning auto-populated Table 8A in GSTR-9 not matching their comparison sheet data from GSTR-2A/2B. The general consensus is that portal calculations are usually correct, suggesting the issue might lie elsewhere.