diff --git a/reissueSSLOrder.md b/reissueSSLOrder.md
index ce8396a..2564c55 100644
--- a/reissueSSLOrder.md
+++ b/reissueSSLOrder.md
@@ -18,6 +18,7 @@ primary domain must not be included to the list.
 domain names. The list must not contain the primary domain.
 * dcv_method – Domain Control Validation method (email, http, dns).
 * signature_hash – hashing algorythm ('SHA2').
+* unique_code - is the random value used during DCV process. Only numbers and alphabetic characters are allowed. The length of the string is from 15 to 20 characters. We will generate own random value if no values provided.  At present Sectigo and GOGETSSL products support that feature. For Digicert we generate values on our side.  Please check Products (custom_dcv_random_value 1/0) to understand which products do support custom random values.
 
 ### Response
 If no errors in request following parameters will be returned: