diff --git a/src/@utils/aquarius.ts b/src/@utils/aquarius.ts
index 111851aaa..8ad67fb5f 100644
--- a/src/@utils/aquarius.ts
+++ b/src/@utils/aquarius.ts
@@ -57,6 +57,7 @@ export function generateBaseQuery(
             ? getFilterTerm('chainId', baseQueryParams.chainIds)
             : '',
           getFilterTerm('_index', 'aquarius'),
+          getFilterTerm('customIdentifier.keyword', 'myCustomIdentifier'),
           ...(baseQueryParams.ignorePurgatory
             ? ''
             : [getFilterTerm('purgatory.state', false)]),
diff --git a/src/components/Publish/index.tsx b/src/components/Publish/index.tsx
index 9098e42df..7473ad4f8 100644
--- a/src/components/Publish/index.tsx
+++ b/src/components/Publish/index.tsx
@@ -133,6 +133,9 @@ export default function PublishPage({
         erc721Address
       )
 
+      // add custom identifier
+      Object.assign(ddo, { customIdentifier: 'myCustomIdentifier' })
+
       if (!ddo) throw new Error('No DDO received. Please try again.')
 
       setDdo(ddo)