private void concurrencyConfigurationCheck(VersionTag tag) {
    if (!concurrencyMessageIssued && tag == null && getConcurrencyChecksEnabled()) {
      concurrencyMessageIssued = true;
      logger.info("Server has concurrencyChecksEnabled {} but client has {} for region {}",
          new Object[] {!getConcurrencyChecksEnabled(), getConcurrencyChecksEnabled(),
              this});
    }
  }
issue a config message if the server and client have different concurrency checking
expectations
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java