Filter Whitelisted Observables activity The Filtered Whitelisted Observables workflow activity removes observables that can be ignored from the list of observables. This activity can accelerate the investigation and remediation process. The Filter Whitelisted Observables activity can be used with any workflow to filter observables before any other action. Results Possible results for this activity are: Table 1. Results Result Description Success Filter list created. Failure An error occurred while attempting to filter the observables. More error information is available in the activity output error. Input variables Input variables determine the initial behavior of the activity. Variable Description observables List of available observables. Output variables The output variables contain data that can be used in subsequent activities. Table 2. Output variables Variable Description filteredObservables Filtered observables.