If you want to use cost codes in your project quotations and projects, set the default cost code standard and default cost code level.
You can change these defaults on a project quotation work breakdown structure.
Note
If you change these settings on a project quotation work breakdown structure, and already cost codes are defined, these are lost.
Steps
Go to Project management and accounting > Setup > Advanced project management > Advanced project management parameters.
Click Advanced project management parameters.
In the Default cost code standard field, enter or select a value.
Define the default cost code level:
Activity: You can define a cost code for each WBS line. All estimated-costs-and-revenue lines of a WBS line have the same cost code, which cannot be changed.
Transaction: You can define a cost code for each WBS line and for each estimated-costs-and-revenue line. So, estimated-costs-and-revenue lines of one WBS line can have different cost codes.
In the Default cost code level field, select an option.
Click Save.
Close the page.