Limit of number of machines allowed per ID reached

hi my adobe digital edtions say

Limit of number of machines allowed per ID reached

code: E_ACT_TOO_MANY_ACTIVATIONS http//adeactivate.adobe.com/adept/Activate 455:9914;10000 um:uuid:6826dce5-9e3f-4379-a3a9-80a3f1972610

this computer cannot be authorized with your ID because you have reached the limit number of computers or devices that can be authorized with the same ID