Usually external applications that users wish to use dictate which protocols should be enabled.
If nobody is creating a web service client, there is no need to enable this feature.
Step 1. Login as an administrator and select Administration
Step 2. Select Site Administration
Step 3. Select Plugins tab.
Step 4. Scroll down to find the Web Services category.
Step 5. Select Manage protocols
Step 6. From the list of web service protocols, select the web service that you require.
Usually the external service will dictate which web service is required.
Step 7. Once you’ve selected the required protocol, select the eye symbol located under the enable column.
An eye with a strike through it indicates that the protocol is disabled, if the eye doesn’t have a strike through it, the protocol is enabled.
Step 8. Scroll to the bottom of the page and select Save Changes.
The protocol has now been enabled.