We had a system run out of SQL storage space and it suspended all tasks for around 1 day before deciding to terminate them automatically with the error. It would be preferable to keep the tasks suspended until space can be allocated instead, otherwise there is no way to restart the forms process.

Could not allocate space for object 'dbo.formatted_variables'.'IX_formatted_variables_attribute' in database 'ETI_Forms' because the 'PRIMARY' filegroup is full. Create disk space by deleting unneeded files, dropping objects in the filegroup, adding additional files to the filegroup, or setting autogrowth on for existing files in the filegroup.