Runtime error SAPSQL_ARRAY_INSERT_DUPREC in job SAPRSEUB

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Symptom
When you execute the batch job EU_INIT or the program SAPRSEUB, one of the the runtime errors SAPSQL_ARRAY_INSERT_DUPREC or COMPUTE_BCD_OVERFLOW occurs in connection with enhancement implementations.
Other terms
Exception CX_SY_ARITHMETIC_OVERFLOW
Solution
Import the relevant Support Package or implement the attached correction instructions.