Error while importing your file
Error – “2018-10-20” is not a number — You will receive this error due to in correct column mapping while uploading purchase invoice.

This error will occur if the columns are incorrectly mapped
Steps to fix the error
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On the Upload Purchase Invoices XLS page, upload the XLS document and choose the correct XLS Data Format based on your file.
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Click on Upload Purchase Invoices XLS File
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Under Fields for Invoice details, choose the right column for Supplier GSTIN, Invoice Number, and Invoice Date.

Choosing Invoice details
- Once the Column Mapping is marked correctly, click on Process file upload
