Number range missing

Hi Friends,

We not able to trace one doument in MIR4. When Miro posted user got the document number, when he check that number in MIR4 system is giving msg like "Invocie doc does not exits", when i cheekced its both previous and next number is available. but particulater number i not able to trace. checked in table RBKP. Checked the document archived. So in this case how we identify the location of doc number.

The invoice doc is missing.

Thanks a lot in advance for your help.