We recently upgraded our SAP Gateway UI add-on to SAP_UI 740 SP13 (from SP10) as SAPUI5 libraries we were using were outdated. After the upgrade OData queries with $filter option do not work. OData services that use $filter option return empty result set. Example query that was working before the upgrade are as follows:
/sap/opu/odata/sap/ZCUSTOMER_LOOKUP_SRV/TShiptoSet?Kunnr eq '202768'
OData services that don't use $filter option are working properly. We have tried clearing the metadata cache on Gateway and backend for services in question and that did not help.
We are working on a fast track project and need this issue resolved quickly. Any assistance in this regard is highly appreciated.