diff --git a/src/services/inventory.ts b/src/services/inventory.ts
index b740569..1504183 100644
--- a/src/services/inventory.ts
+++ b/src/services/inventory.ts
@@ -54,13 +54,12 @@ export async function getWorkInProgressSummary(
   dbName: string,
   sub: number
 ): Promise<InventorySummaryRow[]> {
-  // Call portal_WorkInProgressInventorySummaryV6 stored procedure
   const result = await execStoredProc<InventorySummaryRow[]>(
-    'portal_WorkInProgressInventorySummaryV6',
+    'PortalWorkInProgressInventorySummaryV6',
     {
-      CustID: custId,
+      Customer: custId,
       DBNAME: dbName,
-      sub,
+      SUBUSER: sub,
     }
   );
 
@@ -76,11 +75,11 @@ export async function getFinishedGoodsSummary(
   sub: number
 ): Promise<InventorySummaryRow[]> {
   const result = await execStoredProc<InventorySummaryRow[]>(
-    'portal_FinishedGoodsInventorySummaryV6',
+    'PortalFinishedGoodsInventorySummaryV6',
     {
-      CustID: custId,
+      Customer: custId,
       DBNAME: dbName,
-      sub,
+      SUBUSER: sub,
     }
   );
 
@@ -96,11 +95,11 @@ export async function getProcessedOtherSummary(
   sub: number
 ): Promise<InventorySummaryRow[]> {
   const result = await execStoredProc<InventorySummaryRow[]>(
-    'portal_ProcessedOtherInventorySummaryV6',
+    'PortalProcessedOtherInventorySummaryV6',
     {
-      CustID: custId,
+      Customer: custId,
       DBNAME: dbName,
-      sub,
+      SUBUSER: sub,
     }
   );
 
@@ -121,9 +120,9 @@ export async function getUnprocessedSummary(
   }
 
   const result = await execStoredProc<InventorySummaryRow[]>(
-    'portal_UnprocessedInventorySummary',
+    'PortalUnprocessedInventorySummary',
     {
-      CustID: custId,
+      Customer: custId,
       DBNAME: dbName,
     }
   );
@@ -144,9 +143,9 @@ export async function getUnprocessedRRSummary(
   }
 
   const result = await execStoredProc<InventorySummaryRow[]>(
-    'portal_UnprocessedRRInventorySummary',
+    'PortalUnprocessedInventoryRejectsAndReturnsSummary',
     {
-      CustID: custId,
+      Customer: custId,
       DBNAME: dbName,
     }
   );
@@ -167,9 +166,9 @@ export async function getProcessedRRSummary(
   }
 
   const result = await execStoredProc<InventorySummaryRow[]>(
-    'portal_ProcessedRRInventorySummary',
+    'PortalProcessedInventoryRejectsAndReturnsSummary',
     {
-      CustID: custId,
+      Customer: custId,
       DBNAME: dbName,
     }
   );
@@ -237,12 +236,10 @@ export async function getInventoryDetails(
     DBNAME: dbName,
   };
 
-  // V6 procedures use CUSTID (uppercase), non-V6 use custID
+  // V6 procedures use Customer, non-V6 also use Customer
+  params.Customer = custId;
   if (procConfig.isV6) {
-    params.CUSTID = custId;
-    params.sub = sub;
-  } else {
-    params.custID = custId;
+    params.SUBUSER = sub;
   }
 
   // Add filters if provided (only for filtered variant)