INBOUND IDOC not updating the basic data field which is created newly

Hi,

i am creating an inbound IDOC for material master creation in that in basic data1 i have created 2 custom field in general data 1 is updating and another is not updating with the value in iDOC.

User exits codes are fine. but data is not updating.

can some one help hw to resolve this..

regards,

thanigai