What contains the configuration changes made in an instance (i.e. changes in a form) and helps to implement the changes from the Dev environment to another environment?

An Update Set is the ServiceNow mechanism that records configuration and customization changes—such as modified forms, fields, UI policies, or business rules—performed in one instance (e.g., Dev). The captured record set is exported as an XML file and committed into another instance (e.g., Test or Prod) so the exact configuration changes are re-created there. It is therefore the prescribed vehicle for promoting form changes and any other platform configuration between environments.

A. Import sets – move data (records) into ServiceNow, not configuration or metadata.
C. Transform maps – map fields from an import set to target tables; no role in promoting configuration.
D. System dictionaries – store table/field metadata inside one instance; they do not package or transport changes between instances.

1. ServiceNow Documentation, “Update Sets – Capture and Move Changes,” Application Development > Source Control and Update Sets, Orlando release, pp. 1–2, paras 1–3.

2. ServiceNow Documentation, “Import Sets Overview,” Data Management, Orlando release, p. 1, para 1.

3. ServiceNow Documentation, “Transform Map,” Data Management > Import Set Administration, Orlando release, p. 1, para 2.

4. ServiceNow Documentation, “System Dictionary,” Platform Security & Configuration, Orlando release, p. 1, para 1.