Hello everybody,

today I want to share how to fight with error like 

Error 22 An object reference is required for the non-static field, method, or property 'PX.Data.PXSelectBase<Acumatica DAC>.Select(params object[])' bla bla bla

As usually it means that you try to use this in selector of Extension class. Just replace this at Base or Base2 and your problem will go away.

for example 

CR.Location customerLoc = PXSelect<CR.Location, Where<CR.Location.bAccountID, Equal<Required<CR.Location.bAccountID>>, 

                            And<CR.Location.locationID, Equal<Required<CR.Location.locationID>>>>>.Select(this, customer.BAccountID, customer.DefLocationID);

should be 

CR.Location customerLoc = PXSelect<CR.Location, Where<CR.Location.bAccountID, Equal<Required<CR.Location.bAccountID>>, 

                            And<CR.Location.locationID, Equal<Required<CR.Location.locationID>>>>>.Select(Base, customer.BAccountID, customer.DefLocationID);

and your code will be compiled again