Your supplier, DHL, initially filed GST returns with IGST for four months despite being in the same state. They have since switched to CGST and SGST. This appears to be an error that has now been corrected. The portal likely processed the IGST returns because the 'Place of Supply' was incorrectly set to a location outside your state (29).
29 August 2024
My supplier (DHL) initially filed returns with IGST for four months, even though their GSTN is from the same state (29). From August onward, they switched to applying CGST and SGST. Is there a reason for this, or was it just a mistake initially? Additionally, how did the portal process the returns with IGST even though we are from the same state?