"Assignment to feature did not take place" Error

Hi,
I am having an issue with creating a feature for dynamic mail(to be used in conjunction with table T588Z). Maybe I am just misunderstanding this and that is why I am having such difficulty, but here is my scenario.
I have a dynamic action that is set to create an IT0758 when an IT0008 is saved. At the same time, I would like to send a mail notification(SO10) when this 0758 is created. I have created a feature for sending this dynamic mail, but am a little unsure of whether I should have the feature be driven off an infotype or not.
I have tried quite a few scenarios and can't get it to work, but have gotten this message when I did think it SHOULD work: "Assignment to feature ZMSTC did not take place." I have activated and saved this feature and still received the error, but can't quite figure out how to get the mail to send. Any help at all would be GREATLY appreciated!
Thank you very much!
Mike
I am having an issue with creating a feature for dynamic mail(to be used in conjunction with table T588Z). Maybe I am just misunderstanding this and that is why I am having such difficulty, but here is my scenario.
I have a dynamic action that is set to create an IT0758 when an IT0008 is saved. At the same time, I would like to send a mail notification(SO10) when this 0758 is created. I have created a feature for sending this dynamic mail, but am a little unsure of whether I should have the feature be driven off an infotype or not.
I have tried quite a few scenarios and can't get it to work, but have gotten this message when I did think it SHOULD work: "Assignment to feature ZMSTC did not take place." I have activated and saved this feature and still received the error, but can't quite figure out how to get the mail to send. Any help at all would be GREATLY appreciated!
Thank you very much!
Mike