SAP Message 28124 - Current parameter &1 in table/function &2 is multiple value

Diagnosis In actions, procedures, preconditions and selection conditions, youcannot use multiple-value characteristics as entry parameters in atable call or function call. Entry parameters are all currentparameters except the parameters inferred by actions or procedures.Current parameter &V1& in table/function call &V2& is multiple value. Procedure Current parameter &V1& cannot be used as an entry parameter intable/function call &V2&. Correct your entry accordingly.