1. To access the messages navigate to Tools -> System Administration -> Interfaces -> ADS -> View ADS Message Logs.
   

1. Select the drop downs specific to the OTA (in this scenario Booking.com) and the Property, then select the eRes Type and click on the "Search" button.
   

1. The search will return the latest inventory or rate messages last uploaded to the OTA's. The "Sent" message contains what has been sent to the OTA's, whereas the "Received" message contains success or error messages. 
   

1. In order to view these messages highlight the message by clicking on it and click on the "View" button, thereafter click on the "Pretty Print" button in the bottom right-hand corner. 
   

2. Common Errors

Common errors and their solutions are:

2.1 Access to this API with a non-API account is forbidden. Please use an API account.

1. Check if the property is activated for eRes channel manager in the Expedia Extranet - if it is, check that the ID is entered correctly.
   

2.2 Hotel ID not found. You either specified an invalid hotel ID or your account is not linked to this hotel

1. Please check with Expedia support that your account is properly set up for channel management with eRes - if it is check the ID is entered correctly. Check if the property is not hidden. if so un-hide the property on eRes and remove the mapping for the property under the ADS settings.
   

2.3 Pricing models mismatch: you tried to update a price for OCCUPANCY_PRICING, but your property is not configured for this pricing

1. The pricing model is per day pricing so change the selector for "Price model" to "Per Day Pricing". Ask assistance from Expedia Support.
   

2.4 The [amount] cannot be specified with conflicting values within the same request

1. The pricing model is per day pricing so change the selector for "Price model" to "Per Day Pricing". Ask assistance from Expedia Support.
   

2.5 Can't specify person count for PDP rate plan

1. The pricing model is per day pricing. Change the selector for "Price model" to  "Per Day Pricing". Ask assistance from Expedia Support
   

2.6 Pricing models mismatch: your property is configured to use OCCUPANCY_PRICING

1. Change the selector for "Price model" to "Occupancy Pricing".
   

2.7 Sell Rates are not expected for Merchant rate plan or Net Rate hotels

1. The Rate codes need to have an A at the end. Check the rooms and rates mapping CSV from Expedia Extranet and compare to what has been mapped on the ADS Settings. The Rate plan IDs have to be used exactly as shown there.
   

2.8 The following roomtype id (xxxxx) does not belong to the given hotel: xxxxx

1. You are trying to update rooms which is not on Expedia. You can only update IDs which is found on the rooms and rates mapping CSV from Expedia Extranet and compare to what has been mapped on the ADS Settings. The room type IDs have to be used exactly as shown there, rooms which are inactive should not be mapped.
   

2.9 Stop sell outside of Y with remaining base availability

and

Unable to set total inventory below the current base allocation value.

and Inventory request adjusted to prevent prohibited base availability decrease

1. Base allocation (or contracted allotment) is a minimum number of rooms you have agreed to sell through Expedia.  When the availability the Channel manager sends falls below the base allocation, Expedia will ignore availability sent from the Channel manager.
   
2. A common cause of this error is not having a valid price for the room in eRes on the affected dates.
   
3. Make sure you have valid rates for the mentioned dates and no bookings from other sources.
   
4. eRes: change your inventory to send the allotment you have guaranteed Expedia (e.g. by removing bookings from other sources).
   
5. Expedia: Ask Expedia to remove the guaranteed allotment.
   

2.10  The value of attribute 'password' on element 'Authentication' is not valid with respect to its type

1.  The password is empty or contains invalid characters. Check the username and password entered in the ADS settings is correct.
   

2.11 RateId XXX is invalid, rate plan should be active, inactive, or staged or Rate not active

1. You can only update IDs which is found on the rooms and rates mapping CSV from Expedia Extranet and compare to what has been mapped on the ADS Settings. The Rate plan IDs have to be used exactly as shown there.
   

2.12 Non-existent rate plan and rate level pair provided

1. You can only update IDs which is found on the rooms and rates mapping CSV from Expedia Extranet and compare to what has been mapped on ADS Settings. The Rate plan IDs have to be used exactly as shown there.

2.13 Inactive rate plan for restriction or rate updated

1. You are sending a wrong Rate plan id. Check your Rate plan ids in in the rooms and rates mapping CSV from Expedia Extranet and compare to what has been mapped on the ADS Settings. The Rate plan IDs have to be used exactly as shown there.

2.14 MinLOS value (x) exceeds Extranet auto-approval threshold (y) for length of stay

1. The minimum booking length you are sending is higher than Expedia allows. Contact Expedia and ask them to increase your minimum stay.

2.15 The value of attribute 'username' on element 'Authentication' is not valid with respect to its type

1.  The username/and or password you entered is wrong enter your Expedia Quick connect username and password provided by Expedia - EQCeResMaster (NOT your normal Expedia username and password).

2.16 LOS restriction conflict - Min Nights Greater Than Max Nights

1. Expedia is not accepting the minimum stay you are sending because you have a maximum stay in your Expedia Extranet which is lower than the minimum stay you are sending. You have 2 options fix this: