CAM - Invalid account number while creating PO from Work Order Part tab

Hi,

In JDE9.2, Capital Asset Management Module:

I have created a work order and in the parts tab I have entered the details and when I clicked on Create Purchase Order button the system is giving error "Account Number is Invalid".

As per the AAI 1784, the BU, subsidiary should be chosen from the BU, subsidiary of the accounting tab of the work order. But instead of that the system is selecting someother BU 700MNT.1307.300 which is incorrect.

I have attached the screen shots. Please advise I need SRV014.1307.300 which is the correct account number and the PO to be created with this a/c no.