Fix RMAN Duplicate Database Failed with ORA-20 Connecting to ASM Instance

Error Description:
RMAN duplicate database command failed with following error.

ORA-19870: error reading backup piece /u01/app/oracle/e1mvvcmm_1_1
ORA-19504: failed to create file "+DATA"
ORA-17502: ksfdcre:4 Failed to create file +DATA

ORA-15055: unable to connect to ASM instance
ORA-00020: maximum number of processes () exceeded
Solution Description

          The number of process set on ASM instance is low. Increase the value for the process parameter for ASM instance and try the duplicate database command.
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