Are custom business rules for IBM Rational Focal Point supported?
There are non-standard custom business rules that can be used in IBM Rational Focal Point.
IBM only supports the standard business rules that come with Focal Point.
This is indicated on the Upload Business Rule page in Focal Point which can be seen by logging into Focal Point and going to Advanced > Business Rules > Add Business Rule.
The second block of text states:
Attention: Uploading business rules can have severe impact on the installation depending on the included expressions. Product support is limited to the business rules included in the standard installation.