I have created the following extension field on business context : product master general

However, when I try to add it to Fiori UI, I could not find it from available field list:
I am debugging the logic of this available field list to try to find why.After debugging I found the root cause. Now my extension field is added to UI successfully:
For detail analysis please see this link:
https://blogs.sap.com/2016/12/30/why-my-extension-field-does-not-appear-in-available-fields-list-for-extension/本文來自雲栖社群合作夥伴“汪子熙”,了解相關資訊可以關注微信公衆号"汪子熙"。