Question on Audit History? What does this mean--> Event: retrieve, Changed Field: Pricing Error, Old Value: Missing Price Level, New Value: None.

Question on Audit History?

Event: retrieve

Changed Field: Pricing Error

Old Value: Missing Price Level

New Value: None

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To my understanding, the user was trying to retrieve data from the field Pricing Error? and originally the data in the field was Missing Price Level. Now there is no price level missing, since it says none?

The thing is i looked in the form and i don't see a field called Pricing Error.  Can someone explain to me what this means?

Thanks!