POST/GET attributes to SalesOrder / SalesOrderV2

[Trygve Storrønningen1]

Attributes are missing on SalesOrder/SalesOrderV2

We are several ISVs which need this to achieve more dynamic handling of salesorders - to make the total experience of dynamic flow and autoamtion real for our end customers.

We need to be able to POST more info from our integration, that other ISVs can GET and use in their continued handling of data in their integration. So both GET og POST are needed.

[omelhus]

We also need to be able to filter based on attributes and/or customerrefno and paymentref.

[Trygve Storrønningen1]

This also applies for /api/v3/SalesOrders