Hi Wimol,
We understand your concern.
This issue of abnormal consumption of Invoice numbers can come due to multiple reason.
Example 1 We are getting the similar kind of issue from other users also. In their case if thy add output type ZN_0, ZN_8 then system will throw the dump message due to Exchange Rate conversion.
Example 2 -If 2 users creating invoice same time one got successful another is failure it might create confusion as 1st invoice will allotted 1st number from number range (Failure with 900 item) and second will pick very next number(Successful with 1 item only).Now as 2nd invoice with 1 item only so it will save first in database and 1st invoice having 900 items it will take more time for saving and at the end if it throws dump we can’t maintain number range as already next number used by second invoice.
Example 3 – While creating the invoice with respect to delivery if the country of origin is 3 digit then also the similar dump comes.
Tis is known issue and there is Demand opened for it DEM0015328 Missing Invoices series.
As per the SAP standard Invoice / Accounting document cannot be deleted from the system. If we delete then Cancellation document will get created. But number cannot removed from system.
As the case which you have provided is of27th Jun 2016. System do not keep dump log for more than 5 days. So it is very difficult to analyse the case which you have provided. If you any latest example then please share it.
Thanks,
Vinod