FCO390A ERROR DURING STOW ADD - RC= 4 REAS=000

Document ID : KB000094753
Last Modified Date : 04/05/2018
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Question:
We are running jobs but the jobs are abending with FC0390A ( FCO390A ERROR DURING STOW ADD FOR BAC381S1 RC= 4 REAS=000 ). 
How do we resolve this?
Answer:
FCO390A 
ERROR DURING STOW stowtype FOR membername. RC=rc REAS=reason 

An error has occurred during a stowtype STOW operation for member membername. The return code from STOW is rc. The reason code is reported as reason. For information about STOW error codes, see the appropriate IBM documentation. 

Means basically the following: 

The STOW ADD rc=4 indicates that the member being added was already present in the directory. The COPY statement does specify REPLACE, but FastCopy issued STOW ADD, rather than STOW REPLACE. It checks for the presence of the member in the output and issues STOW REPLACE if it is present. 

It is possible that some other job added that member to the library between the time FastCopy checked for presence and issued STOW ADD.