14077 A signed numeric is not allowed in the text for this TextBox
Cause
This error occurs for a TextBox control under one of the following conditions.
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The dataType property of the text box is a numeric primitive type and an attempt is made to set the text to a value that includes a negative sign.
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An attempt is made to set the dataType property to numeric and the existing text has a negative sign.
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An attempt is made to set the decimals or maxLength property that would leave the text invalid according to the new rules.
Action
Change your application code to ensure that the text value is valid according to the implied validation rules for the properties being set.