BAPI_SALESORDER_CREATEFROMDAT2 jump Sales Order

Hi !!!

I'm working with the bapi,

BAPI_SALESORDER_CREATEFROMDAT2, when i execute the bapi, this return the number the sales order, in some cases the number the sales order that the bapi return not are consecutive, when i view the number the sales order that not generate by the bapi, this sales order have data with corresponding information the sales order generate by the BAPI.

I review the program, and debug, and i don't found

in what time this generate other sales order, this sales order never appear in the values that the bapi return.

Someone have any idea, what are happening !!!

Thanks !!