error Missing prompting unit

[Crystalboy1]

hi there,
I got a report which was working fine both in developer envirnoment and in enterprise as well. then we make a change, inserted a formula, if Maturity date is null, show Value date, and if Value date is null, show expiry date.
now the report is working fine in development envirnoment but when i try to publish in enterprise, it gives me the error " Missing prompting unit "?

Does anyone knows why ?

 

[groggle]

Can you disclose version of Crystal Reports and Enterprise?

Is "prompting unit" the name of a parameter?