delete invoice document

Hi Friends,

I am having one issue.

Cancel the invoice

While user trying to cancel the invoice document through MR8M system not allowing to cancel the document .When we see in Error description it is showing invoice status is E -park and release . so we can't cancel the invoice document . they we try to delete the invoice.

Delete Invoice :

They we try to delete the invoice document through MIR4 > display ->change > Delete.

When trying to delete the invoice system showing the invoice document was delete .but when I click on that it shows popup menu how  stating that update was terminated .Please suggest on that .How can we delete the invoice document .Is there any alternate options were to delete the invoice.

How to delete and how to find the invoice document was delete ?

Thank you

Regards

Raj