This error is given by OMSRuntime when the operation could not be completed because there are no transactions left on the DinkeyOMS account.

For example, OMSRuntime might be trying to register a dongle with DinkeyOMS for the first time, or it might be trying to apply a pending update to a dongle. These actions will use up one transaction and can only be completed if there are some transactions on the developer account.

Solution: the software owner needs to purchase some more transactions for their DinkeyOMS account.