How to protect inventory lines by code

Below are the steps to follow if you want a room to be available only with a specific code:

Inventory > Define inventory > Edit inventory by Excel > Export. Download the inventory table in Excel and enter the text you want in the Codes column and in all the applicable inventory lines, so that these lines are only displayed if this code is applied in the front of the booking engine: 

Then, once you have saved the Excel file and uploaded it back to the back office by clicking on Import, the changes will be saved in the back office. And in Inventory > Define inventory > Inventory table, you will be able to see the codes applied to each inventory line:

NOTE: In order to offer a rate protected by a code that blocks the rest of the available inventory, the creation process must be carried out in the booking engine as in the steps mentioned above, but the promotional code must include 2 asterisks at the end. For example:
BODAPABLOYMARTA**
 ENDESA**