This is regarding the diagnostic criteria for Persistent delusional disorder

This is regarding the diagnostic criteria for Persistent delusional disorder sir
In edition 5, you said the following :
DSM - 1 month of symptoms
ICD - 3 months of symptoms
But, In edition 6, you said the following :
DSM - 3 months of symptoms
ICD - 1 month of symptoms
Which is correct?Please clarify sir
Thankyou sir