3449520 - Datasphere JCO_ERROR_CONVERSION error when previewing data on remote table

Data extraction operation in SAP Datasphere (for example data preview on remote table) throws below error.

• internal error: Error opening the cursor for the remote database <remote_database_name> com.sap.conn.jco.ConversionException: (122) JCO_ERROR_CONVERSION: Cannot convert a value from type int to type CHAR field PARAMCLASS in record RFC_FUNINT , Code: 403, SQL State: HY000

Below error messages can also be found in framework trace.

ABAPAdapter | ABAPAdapter.executeDelta [] - SAPI.0CUSTOMER_ATTR: com.sap.conn.jco.ConversionException: (122) JCO_ERROR_CONVERSION: Cannot convert a value from type int to type CHAR field PARAMCLASS in record RFC_FUNINT
                               at com.sap.hana.dp.abapadapter.TableLoaderExtractor.checkForPointer(TableLoaderExtractor.java:543)
                               at com.sap.hana.dp.abapadapter.ABAPAdapter.executeDelta(ABAPAdapter.java:2307)
                               at com.sap.hana.dp.abapadapter.ABAPAdapter.poll(ABAPAdapter.java:2274)
                               at com.sap.hana.dp.adapter.sdk.adapterbase.BaseAdapterClass$Poller.run(BaseAdapterClass.java:1542)
                               Caused by: com.sap.conn.jco.JCoException: (108) JCO_ERROR_INTERNAL: com.sap.conn.jco.ConversionException: (122) JCO_ERROR_CONVERSION: Cannot convert a value from type int to type CHAR field PARAMCLASS in record RFC_FUNI..."

SAP Datasphere

KBA , HAN-DP-SDI-DS , SAP Datasphere specific SDI issues , DS-DI-RT , Remote Tables , Problem