In practice, when ABAP saves data to a background database table, it automatically converts the lowercase letters entered in the foreground to uppercase letters to save, and sometimes the customer may not need to convert, the following method is needed:
1. Find the data Element of the corresponding field and then go to its domain interface to see if the lower case is ticked on the Definition tab of the domain, and if it is empty, it is automatically capitalized and the system does not convert automatically after the tick.
2, this is a system standard domain, reference its data element is very many, cannot be changed, the solution is to create a new domain, assigned to the data element to be modified, the problem can be resolved.
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Solution for automatic lowercase letters to uppercase when SAP is saved