We’ve had 1 or 2 issues with invoice nos. being copied and pasted from PDF, but occasionally this has resulted in a blank space at beginning, leaving the possibility of processing an invoice twice
Is there anything can be set up to stop blank spaces at beginning of supplier invoice number?
Solved
blank spaces at start of supplier invoice
Best answer by Abdul
Hi
You can enable a validation for Invoice No field in the Page Designer which will check if there is any leading space with entered Invoice No.
Please refer to the screenshot below.

Validation syntax - substring(InvoiceNo, 0, 1) != " "
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