https://community.appian.com/discussions/f/data/13093/data-not-persisting-into-dbGetting the following error when writing the data using write to data store entity smart service There is a problem with task “Write RTRR roles AMU” in the process “RTRR Roles By AMU”. An error occurred while trying to write to the entity “RTRR_USER_ROLESen-USTelligent Community 12https://community.appian.com/thread/59020?ContentTypeID=1Fri, 10 Aug 2018 13:09:08 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:69581bec-7a2a-4da3-aa3f-504dead3eea1santhosh KumarThe error states that process has tried to store null value in the DB. Always do null check before writing data into the DB.<div style="clear:both;"></div>https://community.appian.com/thread/59017?ContentTypeID=1Fri, 10 Aug 2018 12:45:34 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:81d09ec9-76c3-428a-afca-bf658987072cchanduHi The error message is showing that the ACP that is mapped in the WTDSE has null value. Could you please check that the ac value is getting populated from PV?<div style="clear:both;"></div>https://community.appian.com/thread/59005?ContentTypeID=1Fri, 10 Aug 2018 09:40:45 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:26ba67d7-da32-4331-94cb-32ce2ca24719sekars7177Hi, can you please share the print screen of the syntax of how you are writing the data using write to data store<div style="clear:both;"></div>