Are there any Restrictions on the No of Data that can be Exported from a tenant for Entities and Activity Log?
Currently, there is no limit set on Export Data and it totally depends on the tenant quota limit.
Reltio enforces a monthly quota of 1 TB on queries done on activity log data. To minimize the size of your query and stay within the specified limits, ensure to use the appropriate date/time range. The quota is based on the volume of data retrieved from the storage to evaluate queries (not on the data returned from queries). Queries that exceed this limit are not processed.
Note: It is recommended to always specify the time period filter when searching/exporting activity log and history data. This will help reduce your general quota consumption.