Publish & Activate Task not working in Siebel 8.1.X

When clicking Publish and Activate the Task button in Siebel Tools you get below error if your Task is using a Custom BO

The value entered in field Task Business Object of buscomp Task Deployment does not match any value in the bounded pick list FOW SRF Business Object.(SBL-DAT-00225)

The reason is that Siebel internal BC tries to find the BO defination in Tools SRF. Follow the instructions in following in Doc ID 762583.1 to fix the issue.

Essentially you need to compile the custom BO in Siebel Tools SRF.