SYMPTOM:
When users try to add a new dataset into a Dashboard in Strategy Web 9.x the following error message appears:

An error has occurred on this page Your request could not be processed. Please try again. If the problem persists, contact the administrator. (Object with ID ‘XXXX’ and type 4(Metric) is not found in metadata. It may have been deleted. Object with ID ‘XXXX’ and type 4(Metric) is not found in metadata. It may have been deleted. Object with ID ‘XXXX’ and type 4(Metric) is not found in metadata. It may have been deleted. Cannot add child context because Metric objex ‘XXXX’ already appears in the parent context. Internal Error: DSSDocumentExecuteTask::Run(): Error putting report instance on the new process context, job XXXX, Error Code=-2147213368.) (Object with ID ‘XXXX’ and type 4(Metric) is not found in metadata. It may have been deleted. Cannot add child context because Metric object ‘XXXX’ already appears in the parent context. InternalError: DSSDocumentExecuteTask::Run(): Error putting report instance on the new process context, job XXXX, Error Code=-2147213368.)”
Second option:
Follow the steps below in order to increase the Object Cache Space:
Note: For more information regarding this configuration, refer to the following Strategy Knowledge Base document: KB30246: What is an object cache and how is it calculated in MicroStrategy 9