IDL Problem Code 103 with alias ambiguous-keyword-abbreviation 
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Execution Error
This is a fatal error that prevents IDL from compiling or running code
This problem detects when a keyword you use may have more than one definition.
Best Practice
It is a best practice to always use the full-keyword name and not abbreviate or shorten the names.
Here's an example of this problem:
idl
pro myPro, keyword_one = keyword_one, keyword_two = keyword_two
  compile_opt idl2
end
; main level
myPro, /keyword
;      ^^^^^^^^ ambiguous keyword abbreviation
endTo fix, type out the full name of the keyword you are trying to use:
idl
pro myPro, keyword_one = keyword_one, keyword_two = keyword_two
  compile_opt idl2
end
; main level
myPro, /keyword_one
;      ^^^^^^^^^^^^ OK!
end