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Get an error at calling dialog of reservation creation in SAP R/3

Hi experts,

Through SE35,I made a dialog module "ZMM_DIALOG_RE_CREATION".

Its program is SAPMM07R and screen number is 500.

I called this dialog module in my program "SAPMZMB21",the transaction code is ZMB21.

When I executed ZMB21,an error arised.

The error is "Check table 158:entry ZMB21 does not exist."

I found that SAP standard program of reservation creation checks the table T158.

My defined transaction code ZMB21 really did not exist in table T158.

So how should I do?

Former Member
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