Invalid parameter..

[dlucic 1]

Hello everyone,

 

I have a problem with ClientDataset commponent in my Delphi 12 application. 

I have a Datasnap application with several FireDacQuery objects and DatasetProvider objects. On the other side I have application with TSQLConnection that connects to DataSnap application. That works fine. Now I have  ClientDataSet object that connects to one of FireDACQuery in DataSnap appliacation. I set Remote server property and ProviderName property on ClientDataSet object. I forgot to write that this code works very fine on Delphi 10.2 in the past. Now when I try to open ClientDataSet I get error message : Invalid parameter..

 

This query has now parameters. What can be the problem?