I attached the message found in the watchdog rule.
Unlike the other person who reported something like this: I am not getting any new rows in the field_data_commerce_coupon_order_reference table.
--- next day
I found another thing that seems related. If you run the admin coupon list view: http://yoursite/admin/commerce/coupons the type column is missing ( in the coupons view used in this page it is missing too).
Funny; the rule error (Unable to evaluate condition data_is) attached cannot compare the coupon type either?
I then doctored up the query and the coupon type was returned:

--------------------------------------------------------------------
Views generated query
does not return coupon type
SELECT commerce_coupon.coupon_id AS coupon_id, commerce_coupon.type AS commerce_coupon_type, commerce_coupon.is_active AS commerce_coupon_is_active, 'commerce_coupon' AS field_data_commerce_coupon_code_commerce_coupon_entity_type, 'commerce_coupon' AS field_data_commerce_coupon_number_of_uses_commerce_coupon_en
FROM
{commerce_coupon} commerce_coupon
INNER JOIN {commerce_coupon_type} commerce_coupon_type_commerce_coupon ON commerce_coupon.type = commerce_coupon_type_commerce_coupon.type
WHERE (( (commerce_coupon_type_commerce_coupon.status <> '0') ))
LIMIT 50 OFFSET 0
coupon type  is blank !
--------------------------------------------------------------------
below query run in myphpadmin sql window
removed double commerce_coupon after the FROM clause
it returns the coupon type
SELECT commerce_coupon.coupon_id AS coupon_id, commerce_coupon.type AS commerce_coupon_type, commerce_coupon.is_active AS commerce_coupon_is_active, 'commerce_coupon' AS field_data_commerce_coupon_code_commerce_coupon_entity_type, 'commerce_coupon' AS field_data_commerce_coupon_number_of_uses_commerce_coupon_en
FROM commerce_coupon
INNER JOIN commerce_coupon_type commerce_coupon_type_commerce_coupon ON commerce_coupon.type = commerce_coupon_type_commerce_coupon.type
WHERE (
(
(
commerce_coupon_type_commerce_coupon.status <> '0'
)
)
)
LIMIT 50
OFFSET 0

Please advise

Files: 
CommentFileSizeAuthor
add coupon watchdog message.jpg65.77 KBtoby53