PERFORM_INDEX_0 is an ABAP runtime error which you may come across when using or developing within an SAP system. See below for the standard details explaining what it means and how you can avoid or fix this runtime error.
Short Dump Classification: A - ABAP Programming Error
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Index 0 in PERFORM.
Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.
An indexed PERFORM statement (PERFORM i OF ...) specified an
index with a value of 0.
An indexed routine call specified an index with value 0.
Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.
PERFORM_INDEX_0 - perform index 0 PERFORM_CONFLICT_UC_STRUCT - perform conflict uc struct PERFORM_CONFLICT_TYPE - perform conflict type PERFORM_CONFLICT_TAB_TYPE - perform conflict tab type PERFORM_CONFLICT_GENERIC_TYPE - perform conflict generic type PERFORM_CAST_DEEP_MISMATCH - perform cast deep mismatch