SAP Message V4078 - Index VLPKM: found sched.agreement no. & does not exist (VBAK)

Diagnosis No entry exists in table VBAK for the scheduling agreement number &V1&found in index table VPLKM. Procedure Index table VLPKM must be restructured with report RVV05IVB (box SalesDocuments: Scheduling Agreements/Unloading Point). The index can bestructured selectively for individual sales documents.