Can Tridion CMS topics have special characters in Title e.g. %2f

Hi,

I have come across a series of topics in a publication that include %2f in their titles. These topics are being used to link to from other topics.

These topics are causing problems during the topicpull process e.g.

[topicpull] file:/C:/InfoShare/Data/Publish/Data/jpbpjdzxp20/work/1/de-DE/GUID-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx=2=de-DE=.xml:3:1380:

[DOTX031E][ERROR]: The file GUID-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx=2=de-DE=.xml is not available to resolve link information. 

Is there a correlation between these characters in a topic title and failures during publishing?

Any advice appreciated,

Regards,

Ann

emoji