The value of tmnxBsxHttpEnrichFieldAntiSpoof specifies whether or not anti-spoofing is enabled. When the value of tmnxBsxHttpEnrichFieldAntiSpoof is enabled, if the tmnxBsxHttpEnrichFieldHeaderName is already included in the HTTP header, the system will overwrite it. tmnxBsxHttpEnrichFieldName is defined in tmnxBsxTListAttribTable as a tmnxBsxTListAttribValue with tmnxBsxTListName equal to 'http-header-field' and with tmnxBsxTListAttribName equal to 'name' and with a given tmnxBsxTListAttribSet. For that given tmnxBsxTListAttribSet, if the tmnxBsxTListAttribValue with tmnxBsxTListName equal to 'http-header-field' and with tmnxBsxTListAttribName equal to 'anti-spoofing' has a value of '2', setting tmnxBsxHttpEnrichFieldAntiSpoof to 'enabled' will be rejected with error code 'inconsistentValue'. For example, if tmnxBsxHttpEnrichFieldName = 'imsi' tmnxBsxTListAttribValue.'http-header-field'.'name'.2 = 'imsi' tmnxBsxTListAttribValue.'http-header-field'.'anti-spoofing'.2 = '2' setting tmnxBsxHttpEnrichFieldAntiSpoof to 'enabled' will be rejected.