Do you use Siemens AG TIA Portal or Pro-face Remote HMI?
Cause
Display unit's internal memory is insufficient.
Solution
Decrease the size of the transferring project by deleting unnecessary screens, etc.
The guidance of send sizes is as follows.
When using Siemens AG TIA Portal: 10 MB
When using Pro-face Remote HMI: 6 MB
To check the project size, from the [Project (F)] menu point to [Information (I)]. In the dialog box and select [Send data] and check [Send Size].
3.8.2.3 Project Information - Send Data