SAPScript one PO in one lang and 2n PO in different lang

Hi,

We have a sap script Z_MEDRUCK for ME23n.

For PO 100 it is taking Z_MEDRUCK form in EN language.

For PO 200 it is taking Z_MEDRUCK form in NL language.

Who can we check for 200 PO why it is taking different language?

Thanks and Regards,

Sham