We observed below errors in policy servers. Could you please check on the limits/config at policy server end which we can increase/tune to avoid this error.
Release : 12.8.03 (SP3), 12.8.04 (SP4), 12.8.05(sp5)
Component : SITEMINDER - POLICY SERVER, SITEMINDER ADMINUI, SITEMINDER - FEDERATION
"error: Sizelimit exceeded" means that the AD server is configured to return a certain number of results (with the MaxPageSize parameter), and the query should returns more than this value.
See the following non-Broadcom link for an explanation of how to increase MaxPageSize on the active directory:
You should discuss the suitability of doing this with your AD admin first.