Welcome to Occidental's supplier web pages, which provide orientation, support information and tools for prospective or registered suppliers. Occidental Oil and Gas Corporation and its subsidiaries, Occidental Midstream Strategic Development and Centurion Pipeline L.P. are referred to as "Occidental" or "Oxy" in these webpages.
Occidental invites prospective suppliers to complete the
prospective supplier registration. To learn more about our operations, please browse the
Operations pages under Our Businesses. Please note that completing the prospective supplier registration does not imply a contract, or intent to purchase goods or services from prospective suppliers by Occidental.
iSupplier Portal Access - To access the iSupplier Portal, click
The iSupplier Portal is an online self-service tool that allows you to directly access information and conduct transactions. In the future, Occidental may decide to exclusively to use suppliers that are registered on its iSupplier Portal.
Important: If your company is currently doing business with Occidental, but does not have access to the iSupplier Portal, please contact your Occidental representative.
Presentation to see an overview of the iSupplier Portal functionality.
iSupplier Portal User Guides
Note: For step by step instructions on how to use the iSupplier Portal, click on the applicable link below:
iSupplier Users Administration|
Request for Information|
Request for Quotation|
Occidental organizes webinar online live training sessions for specific topics, such as e-Invoicing, creating/submitting supplier charges and creating SPO matched invoices.
Create/Submit Match to PO invoices for Standard Purchase Orders (SPOs)||
View/Accept Purchasing Documents. Create/Submit Match to PO Invoices (SPOs)|
Create/Submit Credit Memos
Create/Submit Supplier Charges Only ||
View/Accept Purchasing Documents. Create/Submit Supplier Charges. Create/Submit Credit Memos|
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B2B iSupplier Portal Supplier Charges Integration
If your company is interested in implementing the B2B electronic exchange of the iSupplier Portal Supplier Charges, please review the
Integrated Supplier Implementation Guide (PDF). Then complete and submit the
Supplier B2B Integration Readiness and Technical Assessment Questionnaire and/or inquiries to
Registered Supplier Information Modification
Occidental considers it critical that suppliers keep all supplier data current. If there are any changes in your company information, such as: legal entity name, addresses, bank accounts, tax ID, legal structure, iSupplier Portal - Supplier Security Administrator, etc., please complete and submit the
Registered Supplier Information Modification Form.
Frequently Asked Questions (FAQs)
For additional help regarding the iSupplier Portal, ADP® and other related topics, visit the
Frequently Asked Questions.
Supplier Help Desk
Supplier Help Desk section to access the Inquiry Form and/or phone numbers and request additional help.