This may happen due to various reasons and one of them is as below.
- If you have already configured BAM Portal but removed the portal from the website. Hence the configuration information remained in the BAM Config tables and is not removed from there.
To clear the config information stored earlier, use the BM.EXE and export the config file into a xml and removed the
Now you should be able to configure the BAM portal from BizTalk Configuration window.