System force the user to add rates when creating a progression grade ladder

Summary:

System force the user to add rates when creating a progression grade ladder

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Hi experts, we have seen that we I create a progression grade ladder with/without steps it is mandatory to associate a grade rates. Why this is a mandatory step for these types of grade ladders? If I create a simple grade ladders with steps, the system does not force me to associate a rate..

Version (include the version you are using, if applicable):

25D

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