Hi!

Please tell me how I can correctly realize prevention of field code generation for specific columns.

You can un-map fields you want, using the Designer.

It is not appllicable in my situation: too many tables includes the same set of unused (for my purposes) fields.

I think It can be realized by templates. But I don't know how to make this?

Whicih template set are you using, Adapter or SelfServicing?

Adapter

In the AdapterIncludeEnity.template, you should look for the <[Foreach EntityField]> loop token. And then include everything wihtout that loop inside the following condition:

<[If Not StringValueEquals EntityFieldName  "YourFieldName"]>

<[EndIf]>

To execlude unwanted field.

10x )