diff --git a/module/data/fields/action/rollField.mjs b/module/data/fields/action/rollField.mjs
index a4df2a9e..07a113d3 100644
--- a/module/data/fields/action/rollField.mjs
+++ b/module/data/fields/action/rollField.mjs
@@ -10,13 +10,17 @@ export class DHActionRollData extends foundry.abstract.DataModel {
             bonus: new fields.NumberField({ nullable: true, initial: null, integer: true }),
             advState: new fields.StringField({
                 choices: CONFIG.DH.ACTIONS.advantageState,
-                initial: 'neutral'
+                initial: 'neutral',
+                nullable: false,
+                required: true
             }),
             diceRolling: new fields.SchemaField({
                 multiplier: new fields.StringField({
                     choices: CONFIG.DH.GENERAL.diceSetNumbers,
                     initial: 'prof',
-                    label: 'DAGGERHEART.ACTIONS.RollField.diceRolling.multiplier'
+                    label: 'DAGGERHEART.ACTIONS.RollField.diceRolling.multiplier',
+                    nullable: false,
+                    required: true
                 }),
                 flatMultiplier: new fields.NumberField({
                     nullable: true,
@@ -26,7 +30,9 @@ export class DHActionRollData extends foundry.abstract.DataModel {
                 dice: new fields.StringField({
                     choices: CONFIG.DH.GENERAL.diceTypes,
                     initial: CONFIG.DH.GENERAL.diceTypes.d6,
-                    label: 'DAGGERHEART.ACTIONS.RollField.diceRolling.dice'
+                    label: 'DAGGERHEART.ACTIONS.RollField.diceRolling.dice',
+                    nullable: false,
+                    required: true
                 }),
                 compare: new fields.StringField({
                     choices: CONFIG.DH.ACTIONS.diceCompare,
diff --git a/module/data/fields/action/saveField.mjs b/module/data/fields/action/saveField.mjs
index e93a82a9..23378e05 100644
--- a/module/data/fields/action/saveField.mjs
+++ b/module/data/fields/action/saveField.mjs
@@ -11,7 +11,9 @@ export default class SaveField extends fields.SchemaField {
             difficulty: new fields.NumberField({ nullable: true, initial: null, integer: true, min: 0 }),
             damageMod: new fields.StringField({
                 initial: CONFIG.DH.ACTIONS.damageOnSave.none.id,
-                choices: CONFIG.DH.ACTIONS.damageOnSave
+                choices: CONFIG.DH.ACTIONS.damageOnSave,
+                nullable: false,
+                required: true
             })
         };
         super(saveFields, options, context);