SYMPTOM
"Unexpected error. Invalid procedure call or argument" error message appears when attempting to add new tables into project in Warehouse Catalog in Strategy Developer 9.4.1 as shown below:

Unexpected error. Invalid procedure call or argument

Note:
In order to track down the cause of the behavior, customers encountering this issue should make note of schema-related changes, Object Migrations, or error messages prior to experiencing the problem. Change Journal, if it has been enabled, can help in preserving this information.
ACTION
Edit the attribute form and correct the expression.
The Strategy Internal Reference Number for this issue discussed in this technical note is 931713.
KB413817