ASSIGN_REFERENCE_EXPECTED SAP ABAP Runtime Error assign reference expected

ASSIGN_REFERENCE_EXPECTED 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

You can view further information about a runtme error by using transaction code ST22 which will show you this and all runtime erros that have happen in your SAP system.

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ASSIGN_REFERENCE_EXPECTED ABAP Runtime Error

The first operand is a formal parameter without type or a field symbol without type. The operand type, which was not assigned until run time, is probably not REF TO DATA. Please see program correction for more details about the possible cause of this runtime error and how it could be avoided.

Please see search hints for more details about the possible cause of this runtime error and how it could be avoided.

Please see send to sap for more details about the possible cause of this runtime error and how it could be avoided.

ASSIGN: The first operand must be a data reference. Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.

The first operand specified with ASSIGN has type "<runtime parameter>" and therefore is not a data reference. Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.