Same Invoice # for different Orders

Hi Guys,

I have 2 order types in one OU:

Order Type 1: Replenish

Order Type 2: Standard

Both follow same sequence in Sequential Numbering, so system created Order "1000" and Order "1001"

Now, once invoiced it looks like both of them have the same invoice number - "5000". On Receivables I have just one sequence.

All sequences are set as Automatic on same Ledger.

Is this normal? I did not expect to have the same invoice number for both orders for the same orders that are in the same OU / Ledger. Customer is different also.

If this is normal, is it driven by Customer Name or Invoice Type?