Ship-to party is not assigned to a sold-to party

Dear Experts

I am creating Sales ORder VA01

my customer is 42

so i have enterd 42 in Ship to party and Sold to party

but getting error is

Ship-to party 42 is not assigned to a sold-to party

Followign things I have alrady done which are

1) In XD03 I have checked the Partner Functions, there SH Ship to Party is 42.

2) In IMG , for Sales Order Document Type OR--> Partner Determincation Function TA is assigned

and for Partner Determincation Function TA--> Partner Function SH is assigned and Not modifiable check box is NOT checked

3)I have assigned Partner Determincation Procedure WESR to Account Group 0002

4) In Customer Master data SH-Ship to Party 42 is there in Partner Function

could u please guide me

Regards

Amol