I have tried printing an Amazon Direct Fulfillment shipping label and am seeing an error returned: 

Amazon is still processing the label request, please attempt printing in a few moments. Should the error persist for more than 29 minutes, please contact support 


When the API request is done from Linnworks to Amazon Direct Fulfillment, it might take some time for Amazon to generate the label on their end and return it to Linnworks, therefore users are advised to try reprinting the label once again in 1-2 minutes time, to ensure the label has been generated in the background and is ready to be returned in the API response that Amazon sends to Linnworks.

If the label can not be printed after several minutes still, please contact Technical Support team.