Data Type TextEntry Type CalculatedDescription The Resource GUID field contains the generated unique identification code for each resource in your project. No two resources will have the same Resource GUID. How Calculated As soon as you create a new resource, Project automatically generates a unique identification code for the resource and stores it in the Resource GUID field. Best Uses Insert the Resource GUID column into a resource sheet when you need to see the unique identifier for each resource. This is particularly useful to help with programming and debugging custom applications in Project. Example You are creating a macro that references specific resources in your project. To obtain unique identifiers for these particular resources, you insert the Resource GUID column into the Resource Sheet. Remarks The Resource GUID is different from the Unique ID field for resources. The Unique ID is a sequential number that reflects the order in which resources were added to the project. By contrast, the Resource GUID is a unique alphanumeric string that represents each resource for programming purposes.