Catalog builder reports internal server error 500 when trying to edit catalog itemIssue When using the catalog builder to access and edit certain catalog item, the attached screen appears with Internal Server Error 500 CauseThere were quite few lookup select box type of variables from the affected catalog item where the lookup tables used contains over 6,000 record from each variables. There is a limitation on the table size and record to be lookup which will cause delay while rendering the catalog item in the catalog builder and cause the internal server error 500 Analyze: 1. When error present, below log will be captured from localhost log indicate there are huge amount of data being processed when access the catalog item WARNING *** WARNING *** #702167 [REST API] RESTAPIProcessor : Unknown exception RESTRuntimeException:Transaction cancelled: Max output size reached for current BatchRest transactionDetail: Transaction cancelled: Max output size reached for current BatchRest transaction 2. When test by set those lookup select box type of variables to INACTIVE, there will be no error shown when edit in catalog builder which proof the issue is just on those lookup fieldsResolutionAvoid using a lot Lookup Select Box type of variables in one catalog item especially when the table involved in the lookup variable contains huge amount of records. Use reference type instead of Lookup Select Box to relief this kind of issue.