https://userapps.support.sap.com/sap/support/knowledge/en/1922931
1922931 - TABLE_INVALID_INDEX dump while atp check in sales order | SAP Knowledge Base Article
You got in ECC system TABLE_INVALID_INDEX dump if you trigger an atp check in sales order. The following dump comes in Include LV03VFMQ , FORM MDVEX_MVERF: