You defined the order of elements on the User Interface per instance type using Page Layouts feature, but when you go in the document, this is not working as expected and the order is different.
SAP Cloud for Customer
Sequence change is not supported in Page Layout per instance type due to the impact on performance it could cause.
This feature is not supported in the current release of SAP Cloud for Customer.
- Contact your the Account Executiv
- Check the link https://www.sap.com/uk/services/advisory-development/application-development.html#contact-us
An alternative option may be to check the SAP Cloud for Customer Ideas Forum to submit an idea: https://influence.sap.com/SAPCloudforCustomer
Page Layout, Instance Type, Business Object, Change Element Sequence, Change Transaction, Adaptation , KBA , AP-RC-UIF-FLX , Page Layout & Key User Configuration , How To