The integration of SAP Ariba Contracts (part of the Strategic Sourcing suite) with SAP ERP or SAP S/4HANA via Managed Gateway for Spend & Network supports the creation of outline agreements. The question specifically asks for types of contracts. In standard SAP Materials Management (MM) terminology, outline agreements are categorized into contracts and scheduling agreements. The standard document types for contracts are MK for Quantity Contracts and WK for Value Contracts. These are the most direct and common document types created from an SAP Ariba contract workspace.

B. LPA: This is the document type for a Scheduling Agreement. While it is a type of outline agreement and its creation is supported, it is a distinct business object from a "contract" (MK/WK) in SAP.

C. OL: This is not a standard SAP document type for a contract or scheduling agreement in the context of this integration.

1. SAP Help Portal, SAP Ariba Cloud Integration Gateway, "SAP Ariba Contracts Integration with SAP ERP and SAP S/4HANA": This official guide states, "SAP Ariba Contracts can be integrated with SAP ERP to create outline agreements (quantity contracts or value contracts) or scheduling agreements in SAP ERP from a contract workspace in SAP Ariba Contracts." This confirms that while scheduling agreements (LPA) are supported, quantity (MK) and value (WK) contracts are the primary "contract" types. The question's specific wording makes this distinction critical. (Document available on help.sap.com under SAP Ariba Cloud Integration Gateway).

2. SAP Help Portal, SAP S/4HANA, "Outline Agreement": The official S/4HANA documentation clearly distinguishes between the two main types of outline agreements. It states, "There are two types of outline agreements: Contracts... [and] Scheduling agreements." This supports the reasoning that LPA is a separate category from the contract types MK and WK. (Section: Materials Management -> Purchasing -> Outline Agreements).

3. SAP ERP Central Component, "Purchasing (MM-PUR)" Courseware (e.g., SCM520): University-level and official SAP training materials consistently differentiate between the transaction for creating contracts (ME31K) and the transaction for creating scheduling agreements (ME31L), reinforcing that they are treated as separate document categories within the system, despite both being outline agreements.