Because the SQL Adapter was deprecated and you should be using the WCF-SQL Adapter now.
biztalk 2020 sql adapter
Jan-Jaap Spies
0
Reputation points
Why isn't there a reference to SQL Adapter Samples for BizTalk 2020 on https://learn.microsoft.com/en-us/biztalk/dev-center/biztalk-server-code-samples ?
Documentation without these samples is not descriptive enough. To ask volunteers for their contribution is not going to work, and frankly a bit of a cop-out. Senior BizTalk developers have no interest in providing this information but people needing it are not able to provide it.