Sometimes in a project the planning is not in SAP but come from different tools which optimizes it.

In SAP TM is also possible to plan a Freight Order, Freight Booking, Transportation Unit and Service Order using a Web service.

SAP delivery a standard API call TransportationOrderGenericRequest_In which you can find in SPROXY Transaction in SAP.

Open via Class /SCMTMS/II_CPX_TOR_GN_RQ_IN

Execute to see the result of available fields:

If you’re before S/4HANA 2020will  need to do a custom enhancement at BAdI /SCMTMS/TOR_SE_TOR_GN_REQ to associate FUs with the FO and consider the Actions in Business Object /SCMTMS/TOR:

• ADD_FUSTAGE_WITH_PLANNING
• ADD_FU_BY_BASEID
• ADD_FU_BY_FUID
• ADD_FU_BY_TRQID

If your version is above consider the the details in Oss Note. 2474539.

By Vinicius Coracini Consider the TAG :

<BusinessScope>
<ID>EXTERNAL_PLANNING</ID>
</BusinessScope>

A Document type will be created with the Type G -Creation from Service TransportationOrderGenericRequest_In

Oss Notes, refer to this topic:

2722559 – Usage of TransportationOrderGenericRequest_In in SAP Transportation Management

2875534 – Can you use TransportationOrderGenericRequest_In to assign FU to a FO?

Also, if you need to debug It consider the Oss note:

2356343 – How to debug XML messages in TM (B2B or A2A)

Regards

Rogerio LIma.