Custom Text allows organizations to replace most of the default terms used in SAP Fieldglass with terms commonly used by the organization.
This allows users to recognize application functions based on the internal terminology used. This affects all menus, lists, and titles that contained the original text and applies to the entire Buyer company, displaying for all users. For example, this company uses the term "Service Contract" instead of Statement of Work or SOW, so they've instructed SAP Fieldglass to use their preferred term in place of the SAP Fieldglass default term.
Custom Text can be used to change the default terms in SAP Fieldglass to terms used by your organization, as in how WorkingNet chooses the term 'Division' instead of 'Business Unit.'