What is carrier id_reference used for?

[Amazzing]

The default prestashop installation has 2 carriers with IDs 1,2 and same references, 1 and 2. 
When I create a new carrier, it gets a new ID and same reference (id=3, id_reference=3 etc.)

So why do we need this reference? Where is it used?

[PhpMadman]

In short. It's used everywhere. Instead of using the id as we do on anything else, carriers uses the id_reference instead.

[Amazzing]

In short. It's used everywhere. Instead of using the id as we do on anything else, carriers uses the id_reference instead.

OK, thanks for the reply. 

 

One more question, does id_reference always have to match id_carrier?

In other words, can we have 2 carriers with different id-s and same reference?

[bellini13]

the id_reference does not have to match the id_carrier value.  So Carrier 1 can technically have Reference 2

 

And no, 2 different carriers cannot share the same reference number

[TiaNex Shopping]

there are many carriers with the same id_reference ,

when i tried to config paypal carrier restriction,it can't update the configuration for the duplicated values,

prestashop 1.7.2.4

so there must be a bug in carrier restriction or carrier duplicate process,

Edited December 4, 2017 by VicOffers (see edit history)

[bellini13]

are all of those carriers active?  Or is 1 active, and the others are disabled?  And how were these carriers created?  Did you create them manually, or did you use a module to create them?

Also, PS v1.7.2.8 does not exist.

[selectshop.at]

When you add a new carrier, than it will get a new id. If you EDIT this carrier, than Prestashop will add a new carrier with new ID, but same name. This is not a bug, and was the same logic since every time...

The carrier with ID 4 is not visible than anymore on carrier list of back-office.

For ex: new carrier = ID 4. I edit this carrier. ID 4 is not available anymore and will be reserved in database (for to track possible old orders made with this ID). After editing this carrier and saving it will get ID 5 (or the next one which is free in database).

 

If you are having same carriers with same ID's so it must be a wrong manipulation into your database (csv import or manual edit direct on database with phpmyAdmin).

[TiaNex Shopping]

On 12/3/2017 at 0:25 AM, bellini13 said:

are all of those carriers active?  Or is 1 active, and the others are disabled?  And how were these carriers created?  Did you create them manually, or did you use a module to create them?

Also, PS v1.7.2.8 does not exist.

 

On 12/3/2017 at 0:27 AM, selectshop.at said:

When you add a new carrier, than it will get a new id. If you EDIT this carrier, than Prestashop will add a new carrier with new ID, but same name. This is not a bug, and was the same logic since every time...

The carrier with ID 4 is not visible than anymore on carrier list of back-office.

For ex: new carrier = ID 4. I edit this carrier. ID 4 is not available anymore and will be reserved in database (for to track possible old orders made with this ID). After editing this carrier and saving it will get ID 5 (or the next one which is free in database).

 

If you are having same carriers with same ID's so it must be a wrong manipulation into your database (csv import or manual edit direct on database with phpmyAdmin).

 

yes,thank you,you are right,it was caused by i enabled the disabled shipping method (after edited) from database,

it's not a right way to add new shipping method,