Scenario:
When you try to import multiple resource assignments and, if resource allocation for one or more resource is not specified (assuming that the system would automatically allocate 100% to the users) then, those task assignments may not get imported.

Cause:
In the Resource_Names column where you have entered multiple resource assignments and have specified allocation for one of the resource assignments, but not for the other resources listed in the file.

Resolution:
When importing multiple user assignments and, the allocation is specified for one of the resources, make sure you specify the allocation as 100% for the other users instead of leaving the field blank (if you are not sure of the exact allocation percentage).

Example:
If the following entry is listed in the Resource_Names column of the CSV file:
User1,User2,User3[25%] In this example we are trying to allocate 25% to User3 and 100% to user1 and User2 without specifying it.
The import would be unsuccessful unless 100% allocation is explicitly specified for User1 and User2.