derivedDataType MtasStringAlphaThenDigitsAlphaUnderscore1to127DT

EcimDerivedString with the following pattern restriction: [a-zA-Z][a-zA-Z0-9_]{0,126}

References from:: MtasParlayXBehaviourProfile; MtasParlayXCallNotificationService; MtasPxBehaviourProfile; MtasPxCallNotificationService;

string MtasStringAlphaThenDigitsAlphaUnderscore1to127DT

Valid values: [a-zA-Z][a-zA-Z0-9_]{0,126}