Incorrect authorisation field in SU53 for C_STUE_WRK

Hello Team,

We have received below SU53 from an end user for missing authorisation.

While checking for missing for missing authorisation, we found that object C_STUE_WRK does not have field SWERKS.

But user has access to object C_STUE_WRK :

Now we want to know why SWERKS is being fetched for user even when this auth field is not listed under the object C_STUE_WRK.