Matchcode error

Cud you tell me following match code error?

<b>Display not possible (inconsistency in input help)</b>

I did following steps.

SE11- OTHER DICTINARYOBJECTS

PRIMARYTABLE - ZSTUDENT_MASTER

SAVE

FIELDS

ZSTUDENT_MASTER-STUDENTID

SAVE

MATCHCODE ID --A

i have activated everysteps.

report ztest.

TABLES: ZSTU_MASTER.

PARAMETERS: STUID LIKE ZSTU_MASTER-STUDENTID MATCHCODE OBJECT ZAN1.

thanks in advance