SUPPLY CHAIN MANAGEMENT SYSTEM (SCMS) - USER MANUAL (SUPPLIER) - e-PURCHASE ORDER (SERVICE) VOL 2 - CREATE e-INVOICE & RESUBMIT REJECTED e-INVOICE

Sep 11, 2026

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Supplier user guidance for creating and resubmitting e-invoices within TNB’s Supply Chain Management System (SCMS). Describes the end-to-end flow after Service Entry approval, including how to review confirmation status in document flow, select appropriate SST tax codes based on vendor registration and SST number updates, and perform invoice creation via the confirmation and process screens. Covers bank account selection rules, ADOA-related warnings, and a 5-minute submission restriction for invoices under the same ADOA PO/Contract. Also notes mandatory actions such as agreeing e-invoice terms and conditions.

LanguageEnglish

CategoryInvoices

FormatPDF

Pages15

Reading Time5 min

AccessFree to download

CREATE e-INVOICE

Prerequisites and role

Steps in SUS Portal (Purchase Order and document flow)

SST tax code selection rules

Create Invoice and handle warnings

Invoice number generation and payee selection

5-minute submission restriction

Terms and conditions declaration

SUPPLY CHAIN MANAGEMENT SYSTEM (SCMS) USER MANUAL (SUPPLIER)– e-PURCHASE ORDER (SERVICE) VOL 2 /2025 USER MANUAL (SUPPLIER) CREATE e-INVOICE & RESUBMIT REJECTED e-INVOICE SUPPLIER RELATIONSHIP MANAGEMENT SUPPLY CHAIN MANAGEMENT SYSTEM (SCMS) Page 1 of 15 SUPPLY CHAIN MANAGEMENT SYSTEM (SCMS) USER MANUAL (SUPPLIER)– e-PURCHASE ORDER (SERVICE) VOL 2 /2025 | PROCESS (3) | : | CREATE e-INVOICE | | --- | --- | --- | | ROLE | : | TNB SUS SUPPLIER | CREATE e-INVOICE process will be performed once Service Entry has been approved by TNB (Confirmation status is automatically set to Accepted by Customer) Note: TNB has rights to approve or reject Service Entry initiated by supplier 1. Log in to SUS Portal using ID and Password 2. Click on tab-Purchase Order. To display list of the e-PO 3. Click on-Document Number Page 2 of 15 SUPPLY CHAIN MANAGEMENT SYSTEM (SCMS) USER MANUAL (SUPPLIER)– e-PURCHASE ORDER (SERVICE) VOL 2 /2025 4. Display Purchase Order screen displayed. Click on button-Display Document Flow to check Service Entry (Confirmation) status. 5. Document Flow screen displayed. Check Confirmation under column Document Type. 6. If Service Entry has been verified and approved, status changed from Completion Reported to Accepted by Customer. 7. Click Confirmation. Page 3 of 15 SUPPLY CHAIN MANAGEMENT SYSTEM (SCMS) USER MANUAL (SUPPLIER)– e-PURCHASE ORDER (SERVICE) VOL 2 /2025 Note : Implementation of Sales and Service Tax (SST) From 1st September 2018, vendor should be able to select the appropriate new SST tax code during e-invoice creation. However, this depends on the following conditions being met: • If the Purchase order is subjected to new taxes which are Sales & Service tax (SST) relevant. • Vendor is a SST registered supplier and have updated with TNB the SST number. If a Supplier has not updated his Sales or Service tax registration no. with TNB then he will be treated as Non-Register Supplier for SST and will not be able to select chargeable tax code during e-Invoice creation. For update of Sales and Service tax registration number, please refer to this announcement: [https://www.tnb.com.my/assets/fi](https://www.tnb.com.my/assets/fi)les/Notis SCMS SST TNBv2 .pdf The selection of the SST tax code will be based on the matrix below : | Vendor registered as Sales Tax supplier | Vendor registered as Service Tax supplier | SST tax code selection | | --- | --- | --- | | Registered | Registered | P1– Sales Tax 10%
P5 – Sales Tax 5% PT – Service Tax 6%
PU – Service Tax 8%
PZ – Non Taxable / Exempted | | Registered | Non-registered | P1 – Sales Tax 10%
P5 – Sales Tax 5%
PZ – Non Taxable / Exempted | | Non-registered | Registered | PT – Service Tax 6%
PU – Service Tax 8%
PZ – Non Taxable / Exempted | | Non-registered | Non-registered | PZ – Non Taxable / Exempted | Starting 1st March 2024, for service Purchase Order, its mandatory for Vendor to provide the information whether the services are performed and completed before 1st March 2024. Page 4 of 15 SUPPLY CHAIN MANAGEMENT SYSTEM (SCMS) USER MANUAL (SUPPLIER)– e-PURCHASE ORDER (SERVICE) VOL 2 /2025 a. Sample of eInvoice creation if the Purchase order is subjected to new taxes, which are Sales & Service tax (SST) relevant. Click on Create Invoice and then Process Invoice screen will be display b. Sample of eInvoice creation if Purchase order is not subjected to new taxes, which are not relevant for Sales & Service tax (SST) . Page 5 of 15 SUPPLY CHAIN MANAGEMENT SYSTEM (SCMS) USER MANUAL (SUPPLIER)– e-PURCHASE ORDER (SERVICE) VOL 2 /2025 8. Display Confirmation screen displayed. Click on button-Create Invoice to perform e-invoice process. A Warning and pop-up message will be shown if PO ADOA exist for e-Invoice. Click OK to proceed. 9. Process Invoice screen displayed. System will automatically generate the invoice number in Basic Data section. 10. If Supplier have

FAQs

What triggers the supplier’s e-invoice creation process in SCMS?

e-Invoice creation is performed once Service Entry has been approved by TNB, with the confirmation status automatically set to Accepted by Customer.

How does a supplier select the correct SST tax code during e-invoice creation?

Selection depends on whether the purchase order is SST-relevant and whether the supplier is SST registered and has provided the SST number to TNB. If the supplier is not updated with TNB, chargeable SST tax code selection is not available.

What happens if the supplier tries to submit another e-invoice under the same ADOA PO/Contract within 5 minutes?

The system blocks the action and shows an error indicating submission is not allowed within 5 minutes, requiring the vendor to wait for the full interval before submitting again.

Sep 11, 2026

Upload by Ezra