FBR Error: { “dated”: “2026-03-26 11:55:15”, “validationResponse”: {“statusCode”:“01”,“status”:“Invalid”,“errorCode”:“0012”,“error”:“Provided buyer registration type is not valid. Please refer to relevant reference API in the technical document for DI API for valid buyer registration types “,“invoiceStatuses”:null}, “sourceInvoiceNo”:””, }
Even after changing the customer, I am still encountering
It was working before, but for the past week this issue has been occurring. the same issue.
Few days earlier FBR portal was not responding. ill check and let you know.
@nadeem1 its working perfectly. 
(taking more then usual time but working)
Sir, I am using the same data. It is working in Postman, but in the application I am facing a buyer registration type issue.
Please re-check the procedure/data/ you are adopting in Manager.io.
its working at my hand.
@Syed_Salman_Ali Sir, I sent the invoice once to FBR, but now it is being posted 11 times on IRIS. Earlier, it was showing an “invalid buyer registration” error, but now it has been successful. However, on IRIS it is showing 11 times. Is there any solution for this, or why did this happen?
You posted a recurring sales invoice that has been posted eleven times. There was a delay in the reply from IRIS and it happened. i think you have to do this procedure. (concern to your lawyer first )
To record a sales return via a debit note in IRIS (FBR), log in and go to "Declaration" > "Sales Tax and Federal Excise Return" > "Annexure-I" (for Debit/Credit Notes) to enter the note details, including original invoice, date, and items, to auto-load the data and reduce output tax
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