Explanation of the cause of the "'Choice [sys_choice]' is not a valid reference field target. Select another table" UI error.Issue When a custom reference field is configured to use sys_choice as the reference table, you will see an error when viewing the Dictionary record for that field: "'Choice [sys_choice]' is not a valid reference field target. Select another table."ReleaseKingston Patch 1 and up Please refer Problem - PRB828610CauseThe Choice table should not be used as the reference table for a Reference type field. Reference fields store the sys_id of the corresponding record in the reference table and show the specified display value. For example: the caller_id field stores the sys_id of a record from the user table and displays the corresponding name value. This presents a problem when using the sys_choice table, because existing records are deleted and replaced when choices are modified. This causes a new sys_id to be generated for each record in the choice list. So the sys_id stored in the Reference field is no longer a valid value and the reference is broken.