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Question:
How can I configure a Field mask to only accept uppercase characters for index entries?

Solution:
Please follow the steps below to configure a field mask to only accept uppercase characters;

  1. First, navigate to the "Indexing Assistance" module to create your Field mask.

     
  2. Name your Field Mask, then in the mask definition you'll want to use the following value for multiple word entries: [A-Z\s]* 
  3. Once value has been entered, set your error message and sample text to your own preference.
    Note: To limit the Field mask to only accept single word entries use the following mask definition: [A-Z]* 

     
  4. In order to apply this Field mask to the required field, access the "File cabinets" module from the configurations page.
  5. Open the Store dialog that should be changed, select the field and choose the newly created Field Mask from the drop down

     
  6. Save your changes, and the Field mask should only accept uppercase text.

KBA applicable for both Cloud and On-premise Organizations.