Tax rate area error during PO creation

Hi All

In JDE 9.2.5.6 , when I set the TAXC.F0101 (Entity Corporation code) to 'C' for a company 00001 , then while entering a PO for this company for an external supplier (say 22) , I am always getting an error message as below in the PO detail screen

Processing option in P4310 is set to blank to fetch tax rate area from supplier

Line #1:CAUSE . . . .  The data field being processed does not allow blanks or zeros\r\n               to be entered.\r\n

RESOLUTION. .  Enter a non-blank or non-zero value.

The column highlighted in red because of this error is tax rate area. The supplier master already has the tax rate area and tax explanation code setup in P04012 but system is unable to fetch it during PO creation