Inbound IDOC posted successfully but tax data is blank in the generated document

Hi all,

I have developed a z-report to post an inbound IDOC (basic type ACC_INVOICE_RECEIPT02). When I run the report, invoice document gets successfully created (FB01) in the system. But in the 'Tax data' window, tax amount and Base amount fields remain blank. Please find the screenshot of the document attached. The blank fields are highlighted with red colour.