Tax code for contract not getting determined from Info record

Hi All,

We are trying to create a contract from external system through IDOC and mapped all the relevant required fields in PI. The problem is the contract is not determining the tax code from the info record maintained in the system.

But when i create the contract manually in our system its determining the tax code and the problem comes only when its trying to create through IDOC.

Note - We cannot pass the tax code as both systems are with different company codes .

Regards,

Ramakrishnan.R