You are sharing a feature, tile, or map image layer that contains layers or tables with the same layer or table ID. The first value parameter refers to a layer or table. The second value parameter refers to the duplicated ID value.
Replace duplicate IDs with unique IDs.
Hover over the analyzer message. Click the Options button that appears and click Change General Layer Properties (for a layer) or Change General Standalone Table Properties (for a table). In the properties dialog box, on the General tab, change the Layer ID to a number that is unique in the map or scene.
The analyzer creates separate errors for each layer or table with a common ID. If there are two duplicate values, you only need to change one.
Choose not to preserve the assigned IDs for your layers or tables.
In the Contents pane, right-click the map name and click Properties . On the Map Properties dialog box, on the General tab, uncheck Allow assignment of unique numeric IDs for sharing web layers.
Assigning unique numeric IDs to the layers and tables of your web layer ensures that web maps and client applications draw correctly if you overwrite the web layer. Learn more about preserving layer and table IDs.