Contacts in the Error box when trying to send an SMS
Sometimes when you want to send an sms to either an individual, group, organisation or event a few of the numbers are put into the error box. There are two reasons that contact would be placed there. The first is that they do not have a number - in that case there will only be the Name or Company name, no number will be shown.
The second reason is that the person has been unsubscribed - so they have responded to an sms asking to no longer be sent messages - and a user has blocked their number from receiving any more messages. The way to check whether the contact has been unsubscribed is to hover with your mouse over the name - do not click on it - as that will take you to the contacts details - and you will lose your message.
When you hover a pop up will appear telling you that the contact has been unsubscribed from receiving any sms' from the business. Sometimes this happens in error - or perhaps the person has come back to you and said that they would like to receive messages from your company again. In that case you would need to remove the Unsubscribe block. To do that you must have administrator rights - if you do not have these - then speak to an administrator and ask them to help you to remove the restriction on the contacts number.
An administrator would go to the blue Admin link at the top right of the screen - and click on the Unsubscribe SMS link on the page. On the screen they will then see all the numbers that have been unsubscribed. Find the number that you need to remove the restriction from - and check the checkbox to the left of it. Then click on the White cross in the red box - which will remove the restriction. You can now send this contact sms' again.

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Checking and processing SMS responses.
