SharePoint Error message Error occurred in deployment step 'Activate Features': Invalid field name.{guid}
2 Answers
Somewhere in your feature you have invalid GUID....check that and make it correct. Use VS create GUID option.
There is an attribute Overwrite
for field and content-type definition. Add the attribute and make it true.
e.g.
<Field ID="guid" Name="---" StaticName="---" DisplayName="---" Type="---" Overwrite="True"> </Field>