T-Code: MIRO, Subscreen G/L Account

Hello,

We have an issue wherein the subscreen G/L Account, one user is not able to see a column called Purchase Order (DRSEG-EBELN). Other users are able to see this column and so am I. The Screen layout used is the same is all cases.

Can anyone provide any pointers?

Security Roles or customized display?

Thank you,

Anand