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Masking a field in a custom table

Hi all,

Is there a way to mask a field in a Z custom table in SAP so that the field is filled with asterisks  when displaying the table but the correct values are hidden behind? The scenario is that we have a Z table in SAP with customer details and card PIN numbers. We don't want anyone to be able to view these PIN numbers on this table so we want to just mask the contents of this field. We need the field to still have the valid PIN number in the background as the data is called via RFC to the POS system from SAP.  Is this possible without using authorizations to restrict?

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