Issue with a!deleteFromDataStoreEntities through SAIL interface: Not able to delete data

Hi All,

I have a requirement to delete user selected data from a drop down field. And for that I am using a!deleteFromDataStoreEntities in SaveInto of a dynamiclink field. While doing so, I am getting some issue as below:

Seems like some DELETE rights were not granted to user, The user whoever logs in can able to delete that he/she has in his dropdown list. 

15:24:03,259 INFO  [stdout] (ajp-/0.0.0.0:8009-25) 2018-01-11 15:24:03,259 [ajp-/0.0.0.0:8009-25] ERROR org.hibernate.util.JDBCExceptionReporter - DELETE command denied to user 'appian'@'172.30.0.1' for table 'PRS_FILTER_PU'
15:24:03,268 INFO  [stdout] (ajp-/0.0.0.0:8009-25) 2018-01-11 15:24:03,264 [ajp-/0.0.0.0:8009-25] ERROR com.appiancorp.expr.server.reaction.smartservicebridge.SmartServiceBridgeReaction - Exception occurred during activation of ReactionFunction {key='sys.smartService.delete-from-data-store', class='com.appiancorp.expr.server.reaction.smartservicebridge.PluginSmartServiceBridgeReaction'}
15:24:03,268 INFO  [stdout] (ajp-/0.0.0.0:8009-25) com.appiancorp.suiteapi.common.exceptions.AppianException: An error occurred while trying to delete data. No data was deleted. Details: org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update [entity name=PRS_FILTER_PU, id=2]. (APNX-1-4212-000)