All steps in the following link have been followed, but I’m still getting the same error message that it can not be completed. 

Thank you

https://community.idmobile.co.uk/switching%2Dto%2Did%2Dmobile%2D132/how%2Ddo%2Di%2Dswitch%2Dto%2Did%2Dmobile%2Dfrom%2Danother%2Dnetwork%2Dprovider%2Dusing%2Da%2Dpac%2Dor%2Dstac%2D42495

The message is : 

We've tried to process your PAC, but there is an issue with the information you've submitted. Please check that you have provided the correct details and try again

Its a PAC from Three which is in date, the Transaction number is from Mobiles.co.uk

All resolved with the chat line, no issues now, thank you ID mobile

Hi @Eley 

Glad to hear the live chat could assist with this.

Tom