Courier API error: Invalid service parameter, Service 'FSS'

This error occurs when the Flex Delivery SMS / FSS option is enabled for a GLS shipment, but the recipient's phone number is missing or is not in a format accepted by GLS.

FSS stands for Flex Delivery SMS Service and is used to send delivery-related information to the recipient by SMS.

What should be checked:

• The order must contain a recipient phone number.
• The phone number must be in a format accepted by GLS and must include the international country prefix of the destination country.
  For example, for a delivery to Romania: +407xxxxxxxx.
• If SMS notifications are not required, disable the Flex Service SMS / FSS option in the GLS service configuration.

Possible solutions:

• Either disable the SMS service
• or update the phone number so that it includes the international country prefix corresponding to the shipping destination country
  
  
  
  

Example:

Either disable the SMS service

or update the phone number so that it includes the international country prefix corresponding to the shipping destination country