Unified Developer Core version 25.1.4 withdrawn from ServiceNow Store.Description Unified Developer Core (UDC) is a ServiceNow store application that could be installed on customer instances as a dependency of the following parent store applications on the ServiceNow store. App Engine Studio (AES) Creator StudioTable BuilderUI BuilderWorkflow Studio Since UDC is a dependent app, the application page user interface is hidden on the Store. i.e. the application is not searchable on the ServiceNow store. ISSUE: The issue explained in this article occurred during the installation of the parent application AES however, it can also happen for any other parent applications in the list above. The installation of the parent application is blocked due to dependency on the Unified Developer Core (UDC) application. The customer is requested to install UDC version 25.1.4 as a dependency, however, upon checking on the ServiceNow store, the required version is seen to be withdrawn. Release or EnvironmentRelease family: Washington DC ServiceNow Store Application: Unified Developer Core Version: 25.1.4 CauseVersion 25.1.4 has been withdrawn from the ServiceNow store by the application business unit. ResolutionCustomers need to install UDC version 25.1.5. This version is compatible with Washington DC Patch 3 and above. Kindly check the instance platform version and if the instance version is lower, please ask the customer to upgrade to Washington DC Patch 3. Once the instance is upgraded UDC version 25.1.5 will be automatically installed as a dependency to the parent application. Additional InformationLink to Unified Developer Core Store Application page: https://store.servicenow.com/sn_appstore_store.do#!/store/application/8a841f2bc42f457e8809ea71d35e821f