If you want to add an extension field to the standard c4codatapi service via Cloud Application Studio, you will find that "c4codataapi" is not listed in the ODATA dropdown when you create the ODATA Extension (.xodata) object.
Quick note to self: The SAP blog that mentioned that an exported solution is deployable in up to 2 future releases is here.
As C4C development systems (that are in development) use a different namespace than non-dev systems, simply copying or transporting an iflow from DEV to TEST (or PROD) will lose all extension field mappings.
You can either adjust your iflows manually. This involves uploading the test system WSDL to the iflow and re-mapping all extension fields from the DEV namespace to the test/production namespace, which is not recommended as it is very error-prone.
However, you can also do this automatically with a one-line change as follows:
The C4C object identifier webservice (CommunicationServicesManagementQueryObjectIdentifierMappingIn/Query Object Identifier Mappings) only works if you supply the correct Remote and Local ID type code. Thankfully, the documentation (linked above) provides a list of type codes for commonly used objects, however, the employee business object is missing.
To make it short, the type codes for employee are:
I came across this interesting article by Paul Hardy yesterday and in one of his screenshots he's using a pretty cool header/signature for his methods.
Surveys in C4C are a bit complicated. Here's a quick overview of the data structure (based on Ticket/ServiceRequest).
In case you're operating multiple tenants and find it tedious to monitor incidents created in each tenant separately, please check out SAP note 2611988, which explains the two available options Central Helpdesk Scenario - CHD and Customer Competence Center Scenario - CCC.
One of the things that's a bit annoying in C4C coding is that you can't check if a business document is locked. Or so I thought. I just googled this issue again and came across this blog post.
In case you're faced with a technical error screen in C4C and are looking for the root cause:
Sometimes there's the need to add a help text to a custom or standard screen so the users know (or don't forget) how to use it.
There are two ways for doing this. For custom screens, the preferred way is to do this in the UI Designer.
Look for the property section "Text Information" - it is usually available for Views or Pane Containers - and set "Always show Explanation Area Text" to true. Then maintain the text under "Explanation Area Text".