Invoice verification done doubble times agaisnt one PO

Question

Hello,
SAP has Verified , two invoices two times. Please suggest me.
I m sure the vendor master has no tick in the check doubble invoice Indicator., what could be the other Reason?
Best Regards,
Sridhar.k
Siemens

Answer 1

Img>>MM>>Incoming Invoice>>Set Check for Duplicate invoices
Set Check for Duplicate Invoices
In this step, you can configure for each company code if the system is to check for duplicate invoices when you enter invoices.
This check should prevent incoming invoices being accidentally entered and paid more than once.
You can choose whether to activate or deactivate the check criteria of company code, reference document number and invoice date for each company code. The more criteria that you activate, the lower the probability of the system finding a duplicate invoice. The Accounting documents are checked first, followed by documents from Logistics Invoice Verification (only incorrect invoices or those entered for verification in the background).
When checking duplicate invoices, the system compares the following
attributes in the standard system:
Vendor
Currency Company code
Gross invoice amount Reference document number
1. Invoice date If the system finds an invoice that matches all attributes, the system
displays a customizable message.
If you are entering credit memos, subsequent debits, or subsequent
credits, the system does not check for duplicate invoices.
The exception is the Argentina country version, where the system checks
for duplicate invoices and credit memos.
If a previously processed document is later cancelled and then entered
again, no message is displayed.
Requirements
The system only checks for duplicate invoices in Materials Management
if you specify a reference document number when entering the invoice.
In Customizing (IMG) for Invoice Verification, you can specify that the
system check the following attributes
Reference document number
Invoice date
Company code
Because there are fewer attributes to check, it is more likely
that the system will find a duplicate invoice.
Standard settings
All check criteria are activated in the standard system.
Example
The following document has been entered and posted:
Reference document number: 333
Invoice date: 28.04.00
Gross invoice amount: 100,00
Currency: EUR
Vendor: Wolf
Company code: Hamburg
The settings for checks for duplicate invoices in Customizing have
been maintained as follows:
The field reference document number and company code are not selected.
This means that these attributes will not be checked. Now enter the
following invoice:
Reference document number: 334
Invoice date: 28.04.00
Gross invoice amount: 100,00
Currency: EUR
Vendor: Wolf
Company code: Berlin
Result
By entering the reference document number and entering an invoice, it
is possible to check for duplicate invoices.
The reference document number and the company code contain different
data than the invoice you entered. These attributes are not checked
because you have deselected them in Customizing.
All other attributes are equal. The system displays a message telling
you that a duplicate invoice has been found.
If, for example, you had selected the reference document number in
Customizing, the system would check this and recognize that this invoice
is different to the previously entered invoice. The system would not
then display a message.
Activities
Maintain the settings for each company code.
Regards
Biswajit