Jenny Park

As a Designated Support Contact (DSC) for her organization, Jenny needs to request changes to a custom field from SAP Ariba Support. Jenny wants to learn more about field attributes so that she can submit her request properly.
Let's first try to understand what a custom field is and what its usage is.
SAP Ariba provides standard fields, but custom fields can be added and configured for your solution by SAP Ariba. Custom fields can be added during or after the deployment in your solution, however, there are contractual and system limits to the number and types of custom fields that can be configured.
Why Use Custom Fields?
Fields can be configured to be used as references for reporting and data entry, used to define custom attribute for master data, and used within conditions when configuring templates.
Normal Field Types
These are data entry fields and accept user-entered data or user selections.
Computed Field Types
These are read-only fields, whose content is determined by an expression. Computed fields are non-reportable.

Custom Header Field Entitlements
Customers are allotted five (5) new custom header fields for Sourcing, and ten (10) for Contracts when a customer goes through a deployment. Customer header fields do not apply for SLP, nor Supplier Risk.
There are also changes that can be made to some of the standard fields, which does not count against these allotments. However, not all standard field attributes are editable. Field attributes that can be edited are found in the Data Collection File for Header Fields.
Custom Header Field Data Collection File
This URL https://support.ariba.com/Item/view/131840 will redirect to SAP Ariba Connect for a downloadable copy of SAP Ariba Strategic Sourcing Custom Header Field Data Collection Template.
"As your deployment functional consultant, I will help capture your requirements and help with the configuration efforts during the deployment. For new custom field requests and edits post go-live, customers will want to contact their SAP Ariba Customer Engagement Executive, Account Manager, or SAP Ariba Support."