diff --git a/src/scripts/createIndex.js b/src/scripts/createIndex.js
index 1cb89ce..88b10e3 100644
--- a/src/scripts/createIndex.js
+++ b/src/scripts/createIndex.js
@@ -106,7 +106,7 @@ async function createIndex () {
             memberRate: { type: 'float' },
             customerRate: { type: 'float' },
             rateType: { type: 'keyword' },
-            billingAccountId: { type: 'integer' },
+            billingAccountId: { type: 'integer', null_value: 0 },
             workPeriods: {
               type: 'nested',
               properties: {