I keep getting the following error 

```
Msg 208, Level 16, State 1, Line 1
Invalid object name 'SOPNUMBE'.

```

Can someone point out my mistake? This is my first time using inner join.

My code is as follows:

```
Select SOPNUMBE, SOPTYPE, DOCDATE,
ORDRDATE, CMPNTSEQ, ITEMNMBR, QUANTITY,
UNITCOST, UNITPRCE, EXTDCOST, XTNDPRCE
From SOP10100
INNER JOIN SOPNUMBE
On SOP10100.SOPNUMBE = SOP10200.SOPNUMBE

```