SAP Message BNK_GENERAL018 - Grouping fields &2 &3 too long (&4 > &1)

Diagnosis
The theoretical length of your chosen grouping fields is higher thanwhat is left for them in the sort field REGUH-SRTF3.

System Response
There is the risk that batching and agent determination rules do notwork as expected.

Procedure
If possible, choose shorter fields or make sure that your field valuesdo not use the full theoretical lenght. If you have two grouping fieldsand only one of them is used for agent determination: Choose this one as1st grouping field. In general, the shorter field should be made 1st.