[SQL] Saving changes after table edit in SQL Server Management Studio

If I want to save any changes in a table, previously saved in SQL Server Management Studio (no data in table present) I get an error message:

Saving changes is not permitted. The changes you have made require the following tables to be dropped and re-created. You have either made changes to a table that can't be re-created or enabled the option Prevent saving changes that require the table to be re-created.
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What can prevent the table to be easily edited? Or, is it the usual way for SQL Server Management Studio to require re-creating table for editing? What is it - this "option Prevent saving changes"?

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