Hi,
1) Based on VBELN, get OBJNR field from VBAK.
2) Based on VBAK-AUART, get STSMA field from TVAK.
3) Based on STSMA and OBJNR , get all the statuses from table JEST. ( Only codes starting with E*)
4) Go to TJ30T table and get the description for status codes based on STSMA and OBJNR.
5) Important tables for status - JSTO, JEST .
You can also use FM 'STATUS_OBJECT_READ' to get the status for an order.
Regards,
DPM