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If the following criteria are met, you can delete an empty collectiona collection at the asset level or higher:

• You have permission to delete it in one of the following ways:
  • Via ownership: You created it. 
  • Via group permissions (as described in Managing Edit Permissions) and delete permission. (To request permission to delete data, select About > Contact. For details, refer to Contacting Us.)
• The collection is empty own the data. That is, you created empty collection. The data is not public. That is, the access_group attribute is not empty. For information, refer to Managing Group Access. 

To delete a filecollection:

1. Log in, as described in Logging In. Perform a search, as described in Finding Data
2. Click Upload in the header. The upload page appears.
3. Navigate to and select the collection that you want to delete. Click the deletion option. (For example, to delete an asset, select a program from the program list, select a study from the study list, select the asset from the asset list, and then select Delete Asset.) A message appears prompting you to confirm the deletion.
4. Click Yes. . In the search results, each entry lists the relevant collections (program, study, and data set). A delete icon appears next to each collection that meets the above criteria. (TBD: Does the search results list include empty collections? If not, how would the user delete one?)